RetroSound Technophonic 5-channel car amplifier — 65 watts RMS x 4 at 4 ohms + 330 watts RMS x 1 at 2 ohms

Name: RetroSound Technophonic
Brand: RetroSound
SKU: 068TECHNO
Price: 267.99 USD
Availability: InStock
Rating: 4.5 (27 reviews)

Item # 068TECHNO

RetroSound's modest-looking Technophonic 5-channel amplifier can power your entire system, sending 65 watts RMS to...

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RetroSound Technophonic Only at Crutchfield

RetroSound's modest-looking Technophonic 5-channel amplifier can power your entire system, sending 65 watts RMS to...

Item # 068TECHNO

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Centralized power

RetroSound's modest-looking Technophonic 5-channel amplifier can power your entire system, sending 65 watts RMS to each of your front and rear speakers while delivering up to 330 watts RMS to your subwoofer. Highly efficient Class D technology keeps this powerful amp running as cool as it looks, and allows for a compact chassis less than 2 inches high that'll fit in a lot of out-of-the-way locations.

For the loud crowd

The Technophonic can also be set up for 3-channel operation to power a couple of high-performance speakers with 190 watts RMS each, while sending 330 watts to a sub. High- and low-pass filters, with steep 24 dB per octave slopes, let you fine-tune the signal to precisely match your particular speakers and subs.

Extra bass controls

The Technophonic's subwoofer channel features a bass boost, so you can really pile it on if you want. A wired remote lets you adjust the level of bass for each song from your front seat.

Product highlights:

Featured in our article: Best multi-channel car amplifiers for 2025
5-channel car amplifier
65 watts RMS x 4 + 225 watts RMS x 1 at 4 ohms
95 watts RMS x 4 + 330 watts RMS x 1 at 2 ohms
190 watts RMS x 2 bridged at 4 ohms + 330 watts RMS x 1 at 2 ohms
Class D amp technology
variable high-pass filters (40-400 Hz, 24 dB/octave) on front and rear channels
variable low-pass filter (50-250 Hz, 24 dB/octave) on subwoofer channel
variable bass boost (0-12 dB at 50 Hz) on subwoofer channel

Other Features:

wired remote sub channel gain control with 16-foot cable
RCA preamp inputs
fuse rating: 35A x 2
wiring and hardware not included with amplifier
- 8-gauge power and ground leads recommended
dimensions: 13-11/16"W x 1-7/8"H x 5-5/16"D
warranty: 1 year
MFR # TECHNOPHONIC
Item # 068TECHNO

What's in the box:

RetroSound Technophonic owner's manual

5-channel amplifier
Four 35 amp ATO fuses (2 installed/2 spare)
Wired remote subwoofer gain control
16' Remote cable (3.5mm stereo plug on one end/RJ-25 plug on the other)
4mm Allen wrench
2mm Allen wrench
Four 3/4" Screws
Four 3/8" Screws
Owner's manual
RetroSound contact information

Researched by Crutchfield's Mark G.

Features & specs

Performance
RMS Power Output (Watts x Channels)	65 x 4 330 x 1
Peak Power Output (Watts x Channels)	N/A
Power at 2 Ohms (Watts x Channels)	95 x 4
Power at 1 Ohm (Watts x Channels)	---
Bridged Power (Watts x Channels)	190 x 2
Minimum Impedance Bridged	2
Minimum Impedance Unbridged	2
Best Frequency Response	24-65k Hz
THD at Rated RMS Power	0.2%
Signal to Noise Ratio	95 dB
Input Voltage	---
Features
Amplifier Class	D
Built-in DSP	No
Remote Control	Yes
Low-Pass Crossover Frequency	50-250 Hz
Low-Pass Slope (dB/octave)	24 dB/octave
High-Pass Crossover Frequency	40-400 Hz
High-Pass Slope (dB/octave)	24 dB/octave
Bass Boost	0-12 dB
Bass Boost Frequency	50 Hz
Fan Cooled	No
Fuse Rating	70
Speaker Level Inputs	No
Preamp Outputs	No
Width (inches)	13-11/16
Height (inches)	1-7/8
Depth (inches)	5-5/16
Parts Warranty	1 Year
Labor Warranty	1 Year

Product Research

Features

Channel Configuration: The Techno Phonic is a 5-channel amp; essentially two full range 2-channel amps and a mono subwoofer amp built into one chassis. The full range sections are bridgeable, so the it can be configured as a 5-channel, 4-channel, or 3-channel amplifier.

Channels 1/2 and 3/4:
- 4Ω: 65 watts RMS x 4-channels
- 2Ω: 95 watts RMS x 4-channels
- Bridged: 190 watts RMS x 2-channel into 4Ω
Channel 5:
- 4Ω: 225 watts RMS x 1-channel
- 2Ω: 330 watts RMS x 1-channel

Gain Control: The input levels are independently adjustable for channels 1/2, channels 3/4, and channel 5. The input range for all three is 200mV to 6.0 Volts.

Crossover: The amp has independent crossover controls for channels 1/2, channels 3/4, and channel 5. The crossover slopes for all are 24 dB/octave:

Channels 1/2 and 3/4: high pass; rotary dial; continuously variable 40-400 Hz
Channel 5: low pass; rotary dial; continuously variable 50-250 Hz

Input Mode: The three position input mode switch allows choosing 2-channel (only the channel 1/2 RCA inputs are active), 4-channel (only channel 1/2 and 3/4 RCA inputs are active), or 5-channel (all 6 RCA inputs are active).

Bass Boost: The bass boost on channel 5, centered at 50 Hz, is continuously variable from 0 dB (flat) to +12 dB.

Remote Level Control: The amp includes a wired subwoofer level control, linked to the gain control of the subwoofer amplifier (channel 5). The module allows you to remotely control the output level of the sub from the dash or center console. The remote has a rotary dial, and comes with mounting hardware and a 16' cable.

Note: The remote measures approximately 1.565" wide x 1.165" high x 2.20" deep.

Power Input: Two set-screw terminals are provided for connecting the power and ground cables. The terminals accept up to 4-gauge wire. The set screws are tightened/loosened with the included 4mm Allen wrench.

Remote: The remote turn-on set screw terminal accepts up to 10-gauge wire. The set screw is tightened/loosened with the included 2mm Allen wrench.

Speaker Outputs: The five pair of speaker output set-screw terminals will accept up to 10-gauge wire. The set screws are tightened/loosened with the included 2mm Allen wrench.

Signal Input: The amplifier has three pair of RCA input jacks, labeled channel 1/2, channel 3/4, and channel 5.

Fuses: The amp has two 35-amp ATO fuses, behind a cover panel on the bottom of the amp.

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5 questions already asked

I have 4x 100-watt RMS, 4-ohm speakers (and a sub). Can I wire the speakers into two parallel 2-ohm channels and use this amp in a bridged configuration to drive them at near full capacity?

marcus Mar 05, 2024

1 answer

Greetings Marcus. Thank you for your question. This and may amps are not stable at 2 ohms when bridged. If you parallel your speakers, you would be at 2 ohms, and the amp will overheat, and shut itself down. If you want 100 watts to each speaker, and need that on a 5 channel amp, the Audio Control below will do that. https://www.crutchfield.com/p_161LC51300/AudioControl-LC-5-1300.html?tp=35808

thomas Mar 05, 2024 (Staff)

so im looking at a 5 channel amp. ive notice the inputs are number 1 thru 5 for 5 channel amp. im used to old rca red and white. how do you connect theses amps ?

keith Jan 14, 2024

1 answer

This RetroSound Technophonic 5-channel amp does connect with RCA for line-level signal input, Keith. Channels 1-4 are full range, and inputs 5-6 are for the mono subwoofer channel.

bo Jan 14, 2024 (Staff)

Good day sir's. May I ask, what will be the ideal specifications of speakers and the ideal set up for those speakers best compatible for this amp.? I am planing on using this kind of amplifier in setting up a sound system using two speaker for tweeter, two 6" to 6.5" for vocals and two 8" to 10" for sub.

donna May 08, 2021

2 answers

When you say "tweeter" I assume you mean a single high frequency speaker, I would assum it could be controlled because each pair of channels is adjustable for Hz and gain. The other speakers (assuming they are singe voice cones) are also going to be able to be adjusted assuming everything is somewhere between 4-8 ohms? This is not a plug-and-play amplifier, and certainly not if you are using single voice cones and drivers. It would be a whole lot easier to use a common three way speaker along with with any other amp. As for the sub, it's a good choice because the adjustable gain helps balance the sub with other speaker.

scott May 08, 2021

I use four 6.5s in my doors and a 12" sub in the back. I'm very happy with the performance of this amp

peter May 08, 2021

What subwoofers are best for 4Î©: 225 watts RMS x 1-channel or 2Î©: 330 watts RMS x 1-channel?

jeremiah Aug 17, 2020

1 answer

Thanks for your question. For information on selecting the best subs I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences between the amp models and help you make the best choice for your system.

kristina Aug 28, 2020 (Staff)

What subwoofers are best for 4 ohms 225 watts RMS x 1-channel or 2 ohms 330 watts RMS x 1-channel?

jeremiah Aug 17, 2020

1 answer

I have a 12" downward firing Kenwood in a sealed box. Sounds nice and accurate but I'm considering at 2 ohm speaker to get the extra power out of the amp

peter Aug 17, 2020

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