Stereo integrated amplifier with built-in DAC (Black)
Our take on the Yamaha A-S701 by Crutchfield's David Brown
Potent power, with vanishing distortion levels
It's not hard to find an amplifier that will promise 100 watts per channel of power. But few amps can match that number with such incredibly low distortion as the Yamaha A-S701. This well-built integrated amplifier offers plenty of power to drive bookshelf or tower speakers, including more demanding loads. As you turn up the volume, this amp's anti-resonance construction, symmetrical circuit layout, and high-quality components ensure your music remains clean and clear. By minimizing distortion and interference, your music will sound more listenable with fine details shining through.
Connect your TV and Blu-ray player
The A-S701 has six pairs of analog RCA inputs, including a phono input for connecting a turntable. But music sources aren't the only possibilities: optical and coaxial digital audio inputs let you bring video devices into the fold. Connect a TV or Blu-ray player to these inputs, and enjoy movie sound through your stereo speakers with this amp. It's a cost-effective way to build an excellent two-channel rig in your TV room that offers dynamic sound with a wide stereo image.
Tone controls and direct modes
If you need to make some adjustments as you listen, the A-S701 has front-panel tone controls for bass and treble. There's also a loudness control, for bringing out more detail and depth while listening at low volume. If you prefer a more purist approach to listening, you can bypass these controls with Pure Direct mode, which eliminates signal degradation as your music travels a more direct circuit path. For listening to CDs, engage CD Direct Amplification — it matches the input levels of the source with the amp to further minimize noise introduced at the amplification stage.
- 100 watts x 2 channels into 8 ohms (20-20,000 Hz) at 0.019% THD
- 4-ohm capability allows use with a wide range of speakers
- ToP-ART (Total Purity Audio Reproduction Technology) combines a symmetrical circuit layout along with anti-resonance construction for high-quality sound with minimal distortion
- Pure Direct mode allows music signals to travel the shortest possible route through the unit's circuitry for cleaner sound
- CD Direct Amplification mode matches input signals from CD players for higher signal-to-noise ratio
- optical and coaxial digital audio inputs
- 6 RCA audio inputs, including MM (moving magnet) phono input
- Bluetooth®-ready with optional Yamaha YBA-11 adapter (not included)
- subwoofer output
- two pairs of RCA recording outputs
- signal-to-noise ratio: 99 dB (CD)
- two pairs of gold-plated binding-post speaker connectors with front-panel switching
- 1/4" headphone jack
- detachable power cord
- remote control
- 17-1/8"W x 6"H x 15-1/4"D
- weight: 24.7 lbs.
- warranty: 2 years
- Our 60-day money-back guarantee
What's in the Box:
- Stereo integrated amplifier
- 6.5' AC power cord
- Remote control (RAS14)
- 2 "AA" batteries
- Owner's manual (En/ Fr)
- Warranty information (US/CA)
- On-line product registration information
- "Yamaha Worldwide Representative Offices" note
Great amp, very clear, very loud, well worth the money!!!
Vincent, Sardis, MS
Yamaha A-S701 Reviews
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Features and Specs
|Watts RMS per Channel (8-ohms)||100|
|Watts RMS per Channel (6-ohms)||120|
|Watts RMS per Channel (4-ohms)||Not given|
|Minimum Impedance||4 ohms|
|Signal to Noise Ratio||99|
|Digital Music Features|
|Built-in DAC (Digital to Analog Converter)||Yes|
|High-resolution Audio Playback||No|
|Total Analog Inputs||6|
|Optical Digital Inputs||1|
|Coaxial Digital Inputs||1|
|Dimensions and Warranty|
|Parts Warranty||2 Years|
|Labor Warranty||2 Years|
"Natural Sound" Concept: Yamaha, with a long history of over 125 years as a musical instrument maker, also has a high reputation for HiFi components. Yamaha's A-S701 integrated amplifier takes advantage of this rich experience and high technological expertise. Based on the concept of "Natural Sound", for reproducing all music as it really sounds, and built with scrupulous care from circuit design to basic sound production, the A-S701 reproduces high sound quality and musically rich sound.
Proprietary Yamaha Technologies: The Yamaha A-S701 integrated amplifier employs proprietary Yamaha technologies for optimum performance and sound reproductions.
- ToP-ART Design: When processing and transmission of the audio signal is simple and direct there is less chance of it being affected by noise and distortion. Yamaha's amplifier design technology called "ToP-ART" features an I/O (input to output) Direct Symmetrical Design, with left and right channels organized in a straight, symmetrical layout for highest signal purity.
- ART (Anti-Resonance and Tough): In addition, the ART (Anti-Resonance and Tough) Base bottom chassis and a solid center bar provide high-rigidity support and vibration damping.
High Current Amplifier: The Yamaha A-S701 features a dynamic, high current stereo amplifier with low impedance drive capability. The amp is rated at 100 watts x 2-channels, measured from 20-20 kHz into 8Ω with 0.019% THD (120 watts x 2-channels, measured from 20-20 kHz into 6Ω with 0.038% THD).
High Quality Parts: Custom-made power transformer, custom-made block capacitors, two direct signal path speaker relays, one-point grounding system, aluminum-extruded heat sinks and other top-quality parts effortlessly handle demanding audio signal conditions. The quality of each individual part, as well as how they work together, basically determines the sound quality of any component. Yamaha uses only very high quality parts, carefully selected and tested.
CD Direct Amplification + Pure Direct Mode: With a straight connection to the CD input, CD Direct Amplification maximizes the CD source's signal-to-noise ratio. Additionally, engaging the Pure Direct mode causes the music signals to travel the shortest possible circuit route, bypassing the buffer amp, the tone, loudness and balance controls to virtually eliminate any signal degradation for the purest sound quality.
Sophisticated Front-Panel Design: With a beautifully simple and unique design inherited directly from Yamaha's HiFi audio components, this amplifier also boast an easy-to-operate button layout. The aluminum front-panel has a richly textured silver hairline finish (the rotary knobs are plastic). The rotary encoder makes it quick and easy to select input sources. The luxury hairline finish material offers a nice tactile feeling. LEDs clearly show which source is selected, so you can easily switch sources even in a dark room.
Variable Loudness Control: The A-S701 also feature a new analog loudness control on the front-panel that uses electronic volume for higher sound quality, which lets you adjust the loudness effect as desired. Separate from the overall volume, this controls the balance of the low- and high- frequency sounds, providing full tonal range at any volume level; compensating for the natural loss in the human ear of high and low frequencies at soft levels.
Tone Controls: The integrated amplifier features independent bass (20 Hz) and treble (20 kHz) controls so you can increase or decrease the low and high frequency response (+/-10dB). You can also adjust the output balance of the left and right speakers.
Impedance Switch: The integrated amplifier features a rear-panel impedance switch to match the impedance level of the speakers connected. Choose High or Low:
- High: Select High if using one set (A or B) of speakers with impedance of 6-ohm or higher; when bi-wiring the impedance of the speaker must also be 6-ohms or higher.
- Low: Select Low if using one set (A or B) of speakers with the impedance of 4-ohm to 6-ohm; if using two sets (A and B) of speakers simultaneously, the impedance of each speaker must be at least 8-ohms; when bi-wiring the impedance of the speaker must also be 4-ohms to 6-ohms.
Simple Remote Control: The clean, simple design of the remote control provides easy-to-understand one-hand operation. The easy-to-use design makes it simple to adjust song volume and order. The remote has a sophisticated looking hairline finish that matches the design of the amplifiers. You can also use the remote to control a Yamaha CD/SACD player.
Auto Power Standby: The amplifier has a power management function that detects when it hasn't been used for a long time (about 8 hours) even though the power is on, and automatically shifts it into standby mode. So even if you forget to turn it off, power consumption will be minimized.
Gold-Plated Terminals: The Yamaha A-S701 has gold-plated terminals for all of its inputs and outputs. These gold-plated terminals ensure a high quality connection that prevents signal loss.
Analog & Digital Inputs: The Yamaha A-S701 integrated amplifier offers analog & digital inputs for connection of a variety of home audio components.
- RCA + Phono: The Yamaha integrated amplifier is equipped with six analog stereo (RCA) inputs for connecting external analog audio sources, including a turntable. The Phono input can be used to connect a turntable with an MM phono cartridge to play vinyl records. The unit's Phono input also features a ground terminal.
- Optical & Coaxial Digital Inputs: The A-S701 is equipped with both optical (toslink) and coaxial (RCA) digital audio inputs. The optical and coaxial inputs will accept 2ch PCM (not Dolby Digital/DTS). The audio stays in the digital domain, giving you pure, pristine dynamic sound for all your entertainment sources, from sports and other programs to movies and concerts.
Recording Outputs: There are also two pair of RCA outputs for recording audio through the amplifier to recording device.
A & B Speaker Terminals: The Yamaha integrated amplifier features binding post terminals for its A & B speaker outputs. You can use the A & B speaker outputs to power two pair of speakers, or bi-wire a single pair of compatible speakers. The terminals are not 5-way binding posts because a plastic collar prevents their use with spade lugs and they are too far apart for dual banana plugs.
Sub Output: A terminal for connecting a subwoofer is provided, allowing you to increase the bass output of your system for a more powerful sound with better overall sound quality
Headphone Output: The A-S701 integrated amplifier is equipped with a front-panel 1/4" headphone output for connecting a pair of headphones (sold separately). The headphone output and speaker outputs will work simultaneously; you will need to rotate the speaker selector switch on the front-panel to the Off position to turn off the sound from your connected speakers.
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Why did you buy this?
based on needs/wants quality and price were selected for choosing this amp [ Larry Jun 13, 2018 ]
I was looking for a intergrated amplifier to replace a 25 year old Onkyo AV receiver. I decided to dust of my vinyl and needed something with a phone input. Tim, my service advisor, was very helpful. [ EARNEST M Mar 13, 2018 ]
Has class A/B power amp and linear power supply. Replacing a 20 year old NAD integrated. [ wendell Jan 08, 2018 ]
Simple, Output wattage, digital audio input [ J Apr 25, 2017 ]
Bang for the buck. [ John Mar 02, 2017 ]
Wattage and price [ John Jan 30, 2017 ]
Advice and quality of product. [ Gregory Aug 29, 2016 ]
quality and power [ dan Aug 26, 2016 ]
I choose this amp after research of the great sound and quality build. Also this unit has the treble, bass and loudness controls on front should I choose to use them. All the connections on rear that I need and want was also a determining factor. [ Victor Feb 17, 2016 ]
Superb specs for stereo hifi and has phono input. Yamaha product quality reputation. Also like Onkyo but no product matches specs and has phono input. [ ChrisJS Feb 05, 2016 ]
I have had Yamaha amplifiers in the past and had no problems. For the past 12 years I switched to two "high-end" product brands and both of them failed miserably. So I'm going back to Yamaha. I like it's simple lay-out and excellent specifications. All the bells and whistles of an AV receiver would never be used, strictly 2.2 music. [ W May 11, 2018 ]
Has 100watts of clean(low noise) power per channel, digital optical inputs and subwoofer output. [ Jose Sep 07, 2017 ]
The features or this amplifier meet my needs. [ J Nov 28, 2016 ]
14 questions already asked
Bob, This amp is set for 120 voltage @ 60 hz . I purchased this unit a few months ago and love it, reminds me of old school pioneer & maranz units. [ LAWRENCE May 27, 2018 ]
My amp is not switchable from 110-240. [ MICHAEL L May 25, 2018 ]
No it is not [ Steve May 24, 2018 ]
I'm not at home to look at it right now but most high-quality Fidelity equipment is the one thing I can tell you is you will enjoy it sound I have a few different stereo systems I bought this one exclusively for my shop and don't take that wrong when I say shop I spend a good majority of my time there so I need good quality sound [ Robert May 24, 2018 ]
If I'm not mistaken a you 99 as a microphone and I don't remember seeing any microphone inputs but I can tell you that I've owned a lot of stereo equipment a lot and this is one of the best sounding amplifiers I've had in a long time [ Robert Feb 02, 2018 ]
No there is definitely not a USB port. We run ours through our CD player USB port. [ DENNIS Nov 16, 2017 ]
There is no direct port on the 701 hang out but I have a Yamaha CD player that does and it makes my ipod sound awesome through that amplifier [ Robert Nov 15, 2017 ]
No. [ John Nov 15, 2017 ]
Yes, you'll need an adapter, 3.5mm stereo plug to 2 RCA plugs on one of the line level inputs. [ NORMAN K Feb 18, 2017 ]
Yes you can, there is a usb plug-in. It's a great amp with clean, crisp sound [ Don Feb 17, 2017 ]
Unfortunately my amp is very difficult to access the rear of the amp and looking at my manuel I do not see a usb port. However, I play my I pod nano through the amp with my I tunes and it works perfectly. I believe it is the Aux jack. Hope this helps, by the way, what an outstanding amp. As clean as it gets with excellent power. [ MICHAEL Feb 17, 2017 ]
Not through a USB port but you can get a stereo input cable that has an earphone adapter at one end and play from a laptop or a phone that way. [ John Feb 17, 2017 ]
This receiver does have a phono input. The Phono input can be used to connect a turntable with an MM phono cartridge to play vinyl records. The unit's Phono input also features a ground terminal. [ Jeff Feb 22, 2016 ] Staff
The Yamaha A-S701 is designed to produce cleaner sound with a custom-made power transformer, custom-made block capacitors, two direct signal path speaker relays, one-point grounding system, aluminum-extruded heat sinks and other top-quality parts. That along with proprietary Yamaha technologies allow the A-S701 to reproduce high-quality and musically rich sound. I hope that helps. My Bio: http://www.crutchfield.com/Support/Bio.aspx?bio=159 [ Larry Feb 19, 2016 ] Staff
I have no experience with this tuner. However, the remote works fine with my Yamaha CD changer. [ David Feb 05, 2016 ]
Sorry....I purchased only the amp and not the tuner. I don't have the remote handy even to look at the controls. [ James Feb 04, 2016 ]
I can't answer that question I have a Yamaha sa 701 integrated amplifier backed by a pair of Cerwin Vega XSL 12 they have awesome Bass a little muddy in the mids but I can definitely wait the neighborhood if I want [ Robert Nov 15, 2017 ]
This will partly depend on the type of speakers you are connecting, and the distance you are running the speaker. You can click on the Accessories tab to see recommended cables. [ Jeff Aug 31, 2015 ] Staff
According to the operating manual, "Connect the supplied Power Cable to "AC IN" after all other connections are complete". Remember, this is the AMERICAN manual, and may not apply to India. This manual contains some information for North America, China and Australia, but I see NOTHING for India. My suggestion to you is to contact Yamaha's distributor in India, or see if you can locate this unt in an electronics store where you can look at it.. They can give you a definitive answer. Good Luck!! [ ED Aug 28, 2015 ]
Great product but ask crutchfield or yamaha abut the use in India power requirements [ PAUL Aug 24, 2015 ]
It will work. It can be configured to accommodate 220 quickly and efficiently. This is a great amp. [ stump Aug 24, 2015 ]
You will want to contact an Advisor by phone (1-800-324-9695) or online chat to discuss compatibility with your equalizer. They will be able to pull up this amp and see if it will work. If it does not, then they will also be able to discuss other options with you. [ Jeff Dec 03, 2014 ] Staff
Yes - External DAC to Analog input will bypass the internal DAC. Which input to use will depend on what kind of source you are trying to connect. [ Michael Oct 04, 2018 ]
Yes, the AS-701 is rated at 100 w per channel, the RTiA7 speaker is rated to take up to 300 watts. Physically the connections are compatible as well but make sure to get high grade cable and match the connectors (banana plugs) on each end, my Polks have banana receptacles and the AS-701 I own has them as well. Be careful though if you are expecting to use the speakers at full rated power of 300 watts as the amplifier will probably begin to clip at the the top of its output range. Also, I've noted that my Polks aren't quite as efficient at low power as other speakers I own but they sound great. [ NORMAN K Dec 17, 2016 ]
I Would think so , I used it with cerwin Vegas [ Keith Dec 17, 2016 ]
Yes [ DENNIS Dec 16, 2016 ]
Yes you can add those speakers to the amp. May I add that A-S701 is quite a piece of equipment, the first that hit me is the clarity. Excellent choice [ Don Dec 16, 2016 ]
Sandy, I am not familiar with the Polk RTIA7's but I have NHT Towers connected to mine. I can tell you that initially after receiving this amp and having replaced a Denon with identical power I was a bit underwhelmed. Its now been two years later and I have really grown to LOVE this Yamaha. At first I felt its bass response was a tad lacking compared to the Denon but I can honestly day that was a mistake. I would describe this amp as precise. I cant imagine why these Polks would not work well although I do not know their OHM rating. As a bass and guitar teacher I consider myself extremely picky as to the performance of my stereo gear. I have many friends who are serious audiophiles who have EXTREMELY expensive high end gear and they all have been blown away by this amp. I find it to be exactly what I was after in an two channel audio only amp. I am completely satisfied with the performance and quality of this amp. I can only imagine that your Polk towers will sound great with the Yamaha. The one thing about the Yamaha that took some getting used to compared to the Denon was the way the volume control was calibrated. The Denon displayed most of its power between the first half of the dial. Once past halfway not much changed. The Yamaha is more conventional as I use it past the halfway point on occasion and it keeps getting louder and stays remarkably clean doing it. I use this amp quite often , I am partial to two channel amps and I would definitely by it again if anything happened to it. Extremely pleased. Good luck. [ MICHAEL Dec 16, 2016 ]
Absolutely. 8 ohm speaker rated for 300 watts. Amp is rated for 100 watts into 8 ohms. You won't have the headroom of a bigger amp. Based on the sensitivity of the speaker, 89db, you'll hit just over 107db at full volume which is typically enough for most people. [ A Dec 16, 2016 ]
absolutely. This amp takes either banana connections or bare speaker wire, the other end of the speaker cable would, of course, have whatever connectors are compatible with the Polks. [ Penguiy Dec 16, 2016 ]
If you are asking if this will have enough power to move the Polk RTiA7s.... I would say absolutely yes. It is a very powerful amp with little distortion. This amp also has A/B channels which will allow you to bi-amp those speakers if you desire. I my opinion... this amp is in a 'better class' than your speakers. And pairing it up with those speakers might be doing the amp an injustice. However, dollar for dollar, I can not imagine any other amp that can make the Polks sound the best they can sound. [ Yelitza Dec 16, 2016 ]
I'm am not running Klipsh but I am running NHT towers. When I first received this amp I somewhat felt that it didn't have the warmth my Denon had. Now that I have owned it for over a year I have gotten to appreciate just how clean this amp is. Wish I could help you with the specific speakers but this maybe of some use. I am pleased with the amp though. Extremely clean. [ MICHAEL Oct 24, 2016 ]
I have this amp paired with Martin Logan 60XT floor-standing speakers. I think the 60XTs are a bit nicer than the amp...but the sound quality sounds great. I particularly like the amp...i spent a lot of time researching integrated amplifiers and finally settled on the A-S701. I much recommend this amp. [ Angel De Jesus Oct 24, 2016 ]
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