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Crown XLS 1502

DriveCore™ 2 Series power amplifier — 300W x 2 at 8 ohms, 1,550W x 1 at 4 ohms bridged

17 Reviews | 1 question - 2 answers

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Our take on the Crown XLS 1502

Crown's XLS 1502 2-channel power amplifier can put out 300 watts per channel at 8 ohms, 525 watts at 4 ohms, 775 at 2 ohms, and up to 1550 watts when bridged — enough to cleanly power a wide variety of loudspeakers. This highly efficient Class D amp employs internal heat sinks with forced-air cooling to keep the internal temperature under control, and an automated rear fan that kicks in when you're pushing the amp hard.

Give your speakers the power they deserve

Crown's XLS 1502 2-channel power amplifier can put out 300 watts per channel at 8 ohms, 525 watts at 4 ohms, 775 at 2 ohms, and up to 1550 watts when bridged — enough to cleanly power a wide variety of loudspeakers. This highly efficient Class D amp employs internal heat sinks with forced-air cooling to keep the internal temperature under control, and an automated rear fan that kicks in when you're pushing the amp hard.

Controls you'll use

The amp's front panel offers independent gain control knobs, LED level/clip indicators, an on/off switch, LCD screen, and three menu control buttons. The LCD screen lets you configure the amp mode, set the limiter, and adjust the crossover configuration with the push of a few buttons. The rear of the XLS 1502 is a veritable treasure trove of connections — balanced XLR, 1/4", and RCA inputs, so you can get creative with your audio sources. The 1/4" line-level outputs let you add more amps to the mix. You'll find binding posts and Neutrik Speakon® outputs for the speakers, plus a built-in circuit breaker to protect against overload.

Technology under the hood

Crown's patented DriveCore technology allows their XLS amps to maintain high efficiency even when they're being powered by untrustworthy AC current. Unstable electrical loads typically introduce heavy noise into most Class D amps, but the DriveCore circuit keeps the distortion to practically zero. So even if you've got to plug in near a lighting rig or other backline gear, XLS amps wipe away interference so your signal always remains clean.

Built-in PureBand™ Crossover System

Are you working with subwoofers, multiple speakers, or floor monitors? You can maximize the XLS 1502's energy by employing its integrated PureBand Crossover System to tailor the sound to fit each of your speakers. It lets you choose the crossover point just about anywhere between 50 and 3000 Hz, and gives you steep 24 dB/octave slopes for seamless transitions between different drivers. Your choice of three different crossover modes, high-pass, low-pass, and bandpass, let you configure your system to nearly any situation or speaker setup, whether you need big-time bass or just need to hear the vocals clearly above the thrash and thunder. And the settings can all be adjusted right from the amp's front panel.

Peakx Limiters keep you out of trouble

Crown's Peakx Limiters give you the confidence to push your system hard without shutting down the entire production. You'll be able to push the volume up safely without fear of sonic distortion littering the audience's ears or wrecking your speakers. Crown put independent Peakx Limiters on every channel, and they're defeatable right from the front panel.

Crown XLS 1502

Crown XLS 1502 rear connection panel

Product Highlights:

    General Specifications:
    • 2-channel power amplifier with built-in crossover
    • power output:
      • 300 watts x 2 at 8 ohms
      • 525 watts x 2 at 4 ohms
      • 775 watts x 2 at 2 ohms
      • 1050 watts x 1 at 8 ohms in bridged mode
      • 1550 watts x 1 at 4 ohms in bridged mode
    • frequency response: 20-20,000 Hz (-1 dB)
    • signal-to-noise ratio: 103 dB
    • total harmonic distortion: 0.5% (20-20,000 Hz)
    • DriveCore circuitry maintains Class D high efficiency with low noise
    • independent right- and left-channel gain controls
    • LCD screen with menu/prev/next buttons
    • sleep mode turns LCD screen off for less distraction
    • security mode prevents tampering
    • rear panel circuit breaker/reset switch
    • defeatable Peakx Limiters for each channel
    • PureBand Crossover System:
      • Linkwitz-Riley 24dB/octave crossover filter
      • crossover frequency range: 50-3,000 Hz, with points every 1.5 octave centers
      • selectable filter types: low-pass, high-pass, and band-pass
    • internal heat sinks with forced-air cooling
    • flow-through ventilation from front to back, plus automatic rear fan for critical temperatures
    • short circuit, thermal, and current limiting protection
    • front-panel LEDs indicate signal, -10dB and -20dB below clipping, clipping, and temperature
    • integrated rack mount ears
    • inputs: balanced XLR, 1/4", and RCA
    • outputs: two binding posts and two Neutrik Speakon
    • 1/4" line-level outputs can be used to send signal to another amp
    Other Information:

    What's in the Box:

    • Power amplifier
    • 3' AC power cord (IEC 3-prong plug)
    • Operation Manual

    Featured Video

    Love this amp, it's feeding a set of Polk Audio RTI A9's and no complaints so far, easy setup, a noticeable upgrade in performance

    Johnny, Hales Corners, WI


    Crown XLS 1502 Reviews

    Average Customer Review(s):

    (17 Reviews)

    Very clean Class D amp

    Cara from Lamar, AR on 12/27/2018

    Crutchfield Customer Review (What's this?)

    4 stars just because the Ch 2 gain knob is a bit stiff around the halfway point. Shouldn't be a problem for me since I'm controlling everything with a 4X10HD miniDSP. I bought the 1502 to drive the midrange speakers in my homemade high output active 3 way towers. The Crown seems much better than the Behringer iNUKE that it replaced. It's dead silent and the Behringer fan was much too loud. Also, the Crown doesn't pop my speakers. Both 3000W Behringers I've used and the 1000W Behringer popped my speakers when powered on. The only thing I like better in the Behringer amps was a much better DSP. Since I'm now controlling everything through the miniDSP this is no longer an issue and I'll be getting the Crown 2002 for my woofers and the 2502 for my 18" sub. Would highly recommend the Crown DriveCore series to anyone looking for lots of clean Class D power.

    Pros: Good value, Clean, Quiet, No speaker pop when powered on or off

    Cons: Limited DSP compared to Behringer iNUKE amps

    Crown XLS 1502

    Johnny from Hales Corners, WI on 11/6/2018

    Crutchfield Customer Review (What's this?)

    Love this amp, it's feeding a set of Polk Audio RTI A9's and no complaints so far, easy setup, a noticeable upgrade in performance

    Pros: Plenty of power

    Cons: Liek a previous reviewer mentioned, the amp may slide a little when pressing the power button, outside of that, I love this amp.

    Crown XLS 1502 + Maggies = :o)

    Stephen from Dayton, OH on 9/14/2018

    Crutchfield Customer Review (What's this?)

    I purchased the Crown XLS-1502 to replace my old war horse ADCOM GFA-555 Mk.II The ADCOM has served me and my Magnepan MG1.5QR speakers well for the better part of 30 years now. So far the early impressions of the 1502 are very good. The first thing I noticed was the more authoritative control this amp has on the Maggie's woofer panels. To my ears the bass is firmer, tighter, punchier and more extended than before. The mids and highs seem to have an extra layer of detail that was missing before. This added detail did NOT come at the cost of adding any harshness. I've been very impressed with the 1502 in the short time that I've owned it. I will make updates if I have anything to add once I've logged in more listening time with the amp. I do have one very small criticism of the amp. The thing doesn't weigh enough. When I push the power switch the amp tends to slide on it's rack shelf. I'll have to see what I can do about finding some cabinet feet that are a little more grippy. At 40 lbs. the ADCOM never had this problem. UPDATED 9/3/18: Returned the amp today for an odd problem that recently popped up. I have the amp set up with the VU meters disabled. I cranked up some music and noticed that the bottom LED in each channel was flickering. Went into the amp's control panel and the meters were still turned OFF. I turned them ON and back OFF again and the meters went completely dark as they're supposed to. Powered up the amp the next day and the same thing happened again. This has been going on for the last 4 days. Due to this small but annoying problem I have lowered my rating to 4 stars.

    Pros: Noticeable improvement across the board over my previous amp. More detailed mids & highs along with tightened & extended lows.

    Cons: Amp is too light and slides easily on it's shelf. Needs feet with better grip.

    Phenominal !! When set up correctly

    Bill from Harrisburg, PA on 7/1/2018

    I set this up in basement listening room hooked up to a pair of B&W CM5 bookshelf speakers. Was using a Yamaha A-S501 integrated amp, nice sounding amp but when using turntable something was missing sonically. I hooked up the Crown 1502 and used a Rolls Promatch RCA to XLR converter and cables, set my Audio Technica turntable to line output, hooked everything else up and I was blown away by the performance of this set up. The B&W's are a totally different sounding speaker with vinyl now, don't let the looks and weight of the Crown XLS fool you, this is a very powerful and clean sounding amplifer that is well suited for a home studio or just pure listening.

    Pros: Very powerful crisp and clean, very versatile

    Cons: none

    Tri-amping high end home audio with the Crown XLS 1502

    Ron from Orangevale, CA on 5/13/2018

    I got a fantastic deal on a pair of B&W Nautilus 802 speakers and my vintage Class A/B amplifier just was doing basically nothing to drive the bottom end. I bought a pair of the Crown XLS 1502 amplifiers and I tried them in several configurations. They sounded pretty good vertically bi-amped with one channel to the top and one channel to the bottom end of each speaker. The internal Y feature is excellent for this. For this price point it's a good high end solution that's fun. Then I made a huge step forward and bought a new amp to power the top end. This amp is getting very positive reviews for way outperforming its price point. With the Crown amps bridged for the bottom end on my power hungry speakers and the very detailed amplifier driving the top end, the different was profound. The class D Crown amps just don't have the detail and transparency to really make the system come together powering everything. As bridged bass amps, they're pretty incredible.

    Pros: Lots of power and pretty tight and controlled.

    Cons: Not the detail and transparency of a high end home audio amp for the mids.

    Crown XLS 1502

    Crutchfield customer from Aurora, CO on 4/14/2018

    Crutchfield Customer Review (What's this?)

    all the good as regards the XLS1002, with a little more power "Good Clean Power, with nice features"



    Crown XLS 1502

    Crutchfield customer from Breezy Point, MN on 4/14/2018

    Crutchfield Customer Review (What's this?)

    Super nice amp for home audio. High and low level inputs for voltage matching to get the best power out of your amp also to include remote turn on ports so you can use you AVR 12v to turn the power on and off. It really deserves five stars but nothing is perfect even though this comes close.

    Pros: Great power, remote turn on, dual inputs (xlr and rca)

    Cons: Rack mount, bright lights

    More power than my neighbors can stand!

    Frank W from Jacksonville, FL on 3/30/2018

    Crutchfield Customer Review (What's this?)

    This is a great way to add power to a home system if you have some kind of extra output that can send the pre amplified signal; Zone 2., Per Amp Out, or even a tape monitor output. It will cost pennies on the dollar to what you would spend on a similar powered home stereo amp. Very good sounding with excellent stereo separation. Not many professional amps also have the capability to wire directly to a home stereo Pre Out. If you need help wiring it up, just ask the folks at Crutchfield and they will help walk you through what you need to do!



    Try this before you get bigger speakers.

    Mike from Socorro, NM on 11/26/2017

    Crutchfield Customer Review (What's this?)

    I'm driving my front channel Klipsch RF-7II's with this thing, using signal from my Marantz NR 1504. Below -20 DB, the Marantz is better for music, but only slightly, for stuff you have to try to listen for, and it's a technical reason. The amplifier is probably in the middle of its operating range, therefore more efficient. When you go above -17db with Bypass L/R on, the Marantz gets overwhelmed. I ruined a tweeter on a Klipsch RF82 by clipping the Marantz amp. When I want more volume, I switch over to the Crown amp. I can drive my system to uncomfortably loud levels. At 0DB, I get 330WRMS playing "Vacant-Let Go" You feel the bass in your chest. It's so loud, you WILL cover your ears. You can cover your ears and it still sounds better than a TV. I never go to concerts anymore. It's better than a theater. This system sounds like a good set of headphones. I do still have RF-82 II's in quadraphone and I feel those are equally impressive as the 7's. Either way shakes the floor so hard, the turntable will go into a feedback loop above -17 db. If you're wanting bigger speakers, try this amp first. The RF 82's and RF7's sound equally impressive with this. The horn on RF82's is at ear level when you sit in a couch and it makes movies better. The horn on the 7's is higher and better for when your're standing 20 feet away. Both speakers go to uncomfortably loud levels even at -10 db. The 82's never throw in the towel. No sub needed.

    Pros: Plenty of power. Impedance isn't an issue. Fan never switches on unless you're at un-safe sound levels.

    Cons: None.

    Crown XLS 1502

    Crutchfield customer from Memphis, TN on 10/23/2017

    Crutchfield Customer Review (What's this?)

    great buy,crisp sound



    Power and Value that sounds great

    Crutchfield customer from Nashville,TN on 4/16/2017

    Crutchfield Customer Review (What's this?)

    Our need for power for an interactive speaker wall lead us to this amplifier for its performance and value. We use this together with a DTS Play-Fi enabled preamp to power a set of Thiel Audio speakers. We run three of these setups in the AURORA Studio to enable staff to quickly demonstrate products and at offsite at events.

    Pros: RCA input with selectable sensitivity Power vs price Small form factor makes for easy placement

    Cons: None so far

    Crown XLS 1502

    Mike from Racine, WI on 4/9/2017

    Crutchfield Customer Review (What's this?)

    Good amp for the money. Have it hooked up to a Yamaha a1060 receiver to power my cerwin vega xls 215. Having some humming issues thru my speakers but I bought a ART cleanbox so hopefully that will eliminate the issues.



    Crown XLS 1502

    Crutchfield customer from Reno, NV on 1/14/2017

    Crutchfield Customer Review (What's this?)

    This amplifier was recommended to us by Crutchfield after our previous amplifier fried itself. It is currently hooked up to 4 250W speakers and is working like a champ. I also like that it is rack mounted, our previous one was not.



    Crown XLS 1502

    Crutchfield customer from Merced, CA on 9/6/2016

    Crutchfield Customer Review (What's this?)

    Great bang for your buck, I give it 4 1/2 stars. Crisp highs big punch in the bass my new speakers love it and so do I. If you need good power with a clean fantastic sound for a fairly low price this baby has it.



    Great value amp

    Spahnsky from Danville, CA on 7/22/2016

    Crutchfield Customer Review (What's this?)

    After researching online, we bought this amp to power a pair of Bose 802 articulated array speakers (with 802 controller) in a church sanctuary. It replaces an old Hafler P500 that died. A local audio expert had loaned us an expensive European brand amp for a couple of weeks as his recommendation for replacement. It was twice the power we needed and three time the price, so we ignored his advice and took a chance on the Crown XLC 1502. We were pleasantly impressed that we could not hear the difference between the two amps. It doesn't provide a direct connection to the internet (which we didn't require) and it operates at 75% volume instead of 35% for the European model. What it does provide is clean, ample power in a small, light-weight package, and, most importantly, a low-cost solution for a basic amp! The only reason I'm not giving it five stars, is because we didn't have the opportunity to compare it to similarly priced brands. However, it appears to be the perfect solution to our situation.

    Pros: Clean sound. Great power to cost ratio.

    Cons: No USB interface.


    Frank BG from sarasota, FL on 2/28/2016

    Have a NAD main surround unit, only the unit lacks power to my rear speakers which are DBX 7 way w/18 inch woofers added this CROWN & wow! The system comes alive the CROWN handle the highs & lows with that great rumble 18 inch DBX woofers can make1 Thinking of picking up another CROWN & setting my system up with only CROWN XLS

    Pros: set it & its perfect

    Cons: XLR connectors but once i set them up no issues

    Very Light Power Amp

    Mario O from Puerto Rico on 11/27/2015

    Crutchfield Customer Review (What's this?)

    Buyed this to replace a PB-2 Crown, very impressed for the easy handle of this unit, it sounds powerful and clean sound. Hard to believe !!

    Pros: Very Light, sounds clear and powerful !!

    Cons: Not yet I used only one time at lower levers


    Hands-on research

    Features and Specs

    Number of Channels 2
    Power Class D
    Watts per channel 8 ohms 300
    Watts per channel 4 ohms 525
    Watts per channel 2 ohms 775
    Watts bridged 1550
    Fan cooled Y
    DSP Y
    Filters HPF, LPF, BPass
    Rack spaces 2
    Height (inches) 3-1/2
    Depth (inches) 9
    Width (inches) 19
    Weight 8.6 lbs
    RCA 2
    1/4" 2
    XLR 2
    1/4" ---
    Binding post 2
    Spring post ---

    Product Research


    Overview: Crown's new XLS DriveCore 2 series of power amplifiers feature an upgraded look with a larger display. Like their predecessors, the new XLS amps are equipped with Crown's patented DriveCore technology. The XLS 1502 can drive your speakers with 1550 watts (at 4Ω bridged) of clean power with very low distortion.

    DriveCore: DriveCore Technology seamlessly integrates the amplifier drive stage into the power output stage fusing everything into a chip the size of a dime. The foundational DriveCore circuitry is based on breakthroughs by Crown's own Gerald Stanley with five patents applying to the advanced feedback, modulation, and output stage technologies. DriveCore's front-end drive circuits leverage the inherent efficiency of Class D output stages while also maintaining superb sonic characteristics. The end result is an ultra-efficient one-piece audio amplifier circuit that exhibits the exemplary audio quality of a highly evolved Class AB design.

    Power Rating: The Crown XLS 1502 can power 8Ω, 4Ω, or 2Ω loads, and can be bridged for 8Ω or 4Ω mono operation. The maximum average power in watts at 0.5% THD, 1 kHz is as follows:

    Impedance Load Dual Mode (stereo) Bridged Mode (mono)
    2 ohm 775 watts N/A
    4 ohm 525 watts 1,550 watts
    8 ohm 300 watts 1,050 watts

    PureBand Crossover System: The PureBand Crossover System in the XLS DriveCore 2 Series adds an enormous amount of flexibility and performance to any system. With this system, the crossover frequency is completely variable allowing the choice of any crossover point between 30Hz and 3kHz on 1/12th octave centers. The use of 24dB/octave Linkwitz-Riley filters provides steep slopes for a seamless transition between high and low drivers. You can choose from three filter types: Low Pass, High Pass, and Band Pass.

    Peakx Limiters: Peakx Limiters provide the ultimate in performance and protection for your entire system. This advanced algorithm was specifically developed and tuned to work with this amplifier and power-supply to achieve higher SPL with less audible artifacts. This means less distortion, less shutdowns, and maximum safe power delivered to your speakers. The Peakx Limiters can be easily turned on or off by channel right from the front panel eliminating the need to be digging around in the back of the dark rack.

    Inputs: The XLS DriveCore 2 Series amplifiers provide one balanced XLR, one 1/4", and one RCA connector per channel for flexible connectivity. The 1/4" inputs can be used as a loop-thru to distribute signal to additional amplifiers.

    Outputs: The XLS DriveCore 2 Series amps feature two 4-Pole Speakon output connectors that will accept 2-pole or 4-pole Speakon connectors. The Channel 1 Speakon connector is wired for both channels so it can be used for bridged-mono wiring or for stereo wiring of two speakers to a single Speakon connector. There is also one pair of back-panel binding posts per channel that will accept banana plugs or bare wire.

    Level Controls: The amplifier's two channel outputs are equipped with independent Gain (Level) control. These front panel rotary controls let you raise or lower the gain as you view the LED indicators to provide an optimal signal to the amp.

    LED Indicators: The power amplifier features ten LEDs (five for each output channel) to indicate status of amplifier:

    • Single Presence: Two green LED's, one for each channel, illuminate when the channel input signal exceeds -40dBu.
    • -10: Green LED flashes when output signal level exceeds -10dB below clip.
    • -20: Green LED flashes when output signal level exceeds -20dB below clip.
    • Clip: Two red LED's, one for each channel, illuminate when the channel's output is being overdriven.
    • Thermal: Two red LED's, one for each channel, illuminate when thermal compression begins.

    Main Menu: The amplifier's back-lit LCD screen allow you to navigate through the main menu and make adjustments to the amplifier right from the front panel:

    • Amp Mode: Allows you to select one of three amplifier modes:
      • Stereo: Channels 1 and 2 function as independent amplifiers
      • Bridge: The output is set into a bridge configuration
      • Input-Y: Drives the two channels with the same input signal
    • Crossover: Lets you select the filter type and frequency for each amplifier output channel. In Stereo or Input-Y mode, you will first be prompted to select which amp channel to set up. Once the channel has been selected, or if you are in Bridge Mode, you can choose from the following: Low Pass, Band Pass, or High Pass
    • Input Sensitivity: Input Sensitivity enables you to set the input sensitivity for the optimal system performance. You can choose from:
      • .775V - High: For sources with inherently low output levels, select this mode to drive the amplifier to full power. Typically, sources that use the RCA connections require the High setting.
      • 1.4V - Normal: For all other audio sources, the input sensitivity should be set to normal
    • System Menu: The System Menu lets you select the following:
      • Display Sleep: Sets the display to go into sleep mode after a predetermined idle time: 30 sec, 1 min, 2 min, 5 min, or sleep mode off.
      • Lighting: Lets you toggle on or off the blue panel lights and the green signal level indicators. The thermal and clip indicators cannot be turned off.
      • Security: Allows you to lock the menu buttons so that the settings cannot be disturbed once they have been set up.
      • System Information: Lets you access additional information, such as the model number, internal temperatures and voltages, firmware version, etc.
      • Factory Reset: Lets you reset the amplifier to the factory default settings. This allows you to start your setup from the beginning, if you desire.

    Flow-Through & Forced-Air Cooling: The XLS DriveCore 2 Series amplifiers employ flow-through, front-to-back ventilation and internal heat sinks with forced-air cooling for rapid, uniform heat dissipation.

    Aux Connector: A 3-pin Aux connector on the rear panel lets you remotely trigger sleep mode through a contact closure on pins 1 and 2. An amp status signal is available on pin 3.

    Specifications: The Crown XLS 1502 DriveCore 2 series amplifier has the following specifications:

    • Sensitivity: 0.775Vrms or 1.4Vrms (selectable)
    • Frequency Response: +0dB, -1dB (at 1W, 20Hz to 20kHz)
    • Signal-to-Noise Ratio: >103dB
    • Total Harmonic Distortion (THD): <0.5%
    • Intermodulation Distortion: <0.3% (60Hz and 7kHz at 4:1, full rated output to -30dB)
    • Damping Factor: >200 (8Ω, 10Hz-400Hz)
    • Crosstalk: >85dB (at 1kHz), >55dB (at 20kHz)
    • Dimensions:
      • Width: 19"
      • Height: 3.5"
      • Depth: 9" (including protrusions)
      • Weight: 8.6 pounds

    Our Product Research Team

    At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

    Q & A

    Customer Q&A

    Crutchfield asked  
    Why did you buy this?

    Reviews. Price. [ Robert  Jan 08, 2019 ]
    experience with XLS1002 [ BRADY  Mar 22, 2018 ]
    Light weight low heat clean power [ KEITH  Nov 25, 2017 ]
    I bought this to supplement our home audio sound. Our Marantz could not keep up with the volume we enjoy. We like it loud. We burned up two brand new MM7055. The Marantz do not go into protection to save the amp, they fry when they go into protection. With the Crown XLS 1502 we can baby our soon to be repaired Marantz on surround and center while driving our mains with real sound. We may just by another Crown to have the power our speakers can handle. [ M  Aug 08, 2017 ]
    This seems a good value product for the price. [ David  Jul 26, 2017 ]
    Crown name and decent price plus Crutchfield customer support [ William  May 11, 2017 ]
    Needed an amplifier powerful enough to power speakers in my CrossFit gym. This was an affordable option. [ Frank  Aug 24, 2016 ]
    Corey in pro audio recommended. Corey's Bio: [ Jason  Jun 27, 2016 ]
    because the power and light to portable [ MARIO  May 02, 2016 ]
    Very flexible inputs and outputs, high power amp with the ability to drive loads from 2 - 8 ohms, led display with selectable types of crossover and frequencies, light weight and rack mountable. What a great product at good price AND free shipping. Crutchfield is the best! [ M  Dec 04, 2015 ]

    1 question already asked

    For details on specific use and/or compatibility in your system, you would be better served contacting a Pro Audio Advisor directly by phone (800.555.9369) or online chat. They can give you more information about whether the Crown XLS 1502 is the right choice for your setup; and if not, they can help recommend a more suitable alternative. Thanks! [ Larry  Nov 07, 2017 ]  Staff
    I use mine in home theater for a bass end amp in a biamped pair of speakers. I use a separate Marchand crossover to split the signal in each channel This would also if I wanted operate as a biamp amplifier with included crossover, but two would be required for stereo. It sounds just fine and I rarely need much of th3e unit's power so have never heard the fan. Just sits there and works. It does not have auto on or off. It seems to be a great amplifier for the price. [ William  Nov 04, 2017 ]