The shipping was very fast had it in two days I like wow that quick the owner of summithifi kept his word he the best the amp put new life in my speaker setup😎
This is a wonderfull processor, full stop. It can't be beat at twice the price. Aamir, as he always does gave me the advice and service that he is known for. He is rarity in todays marketplace.
Aamir at Summit Audio was fantastic to deal with! He’s very knowledgeable, made great suggestions, and everything I ordered arrived promptly. When I called afterward for a little advice, he immediately gave me the help I needed.
My sound system now sounds absolutely insane—in the best possible way! I couldn’t be happier with the results or the service. Highly recommend Amir and Summit Audio. Thanks, Aamir
Well for starters, I want to thank Amir. He’s the best to buy a product from. As for the amp WOW. This unit has some power whoo. The clarity is so clear and distortion free my speakers have never sounded better. The look is Devine, it’s just a classy top notch amp. I would definitely recommend this amp to anyone who wants clear clean POWER!! Thanks again Amir it’s been and I know always will be a pleasure doing business with you. Keep putting out those badass products.
I can't say enough about this SW, and the service that Aamir gives. Personal calls to make sure you are happy with the purchase. Insights & tech tips, a fantastic price, great communication. Cannot say enough good things about him and the products he sells. Super knowledgeable.
Talked to Aamir before finalizing order. All great! Firmware update and Dirac ART installed and working good. This unit is great value and sound quality is top notch.
Test Context
I had the opportunity to try side by side a Tonewinner AD-7300+ amplifier (Class D, 300W@8Ω, 7-channel) and the Summit HiFi A7 (Class A/B, 200W RMS@8Ω, 7-channel).
I was not expecting much differences beside the style (analogue vs digital VU metter) but yes, there is much more than I tought! The A7 revealed a significant and unexpectedly substantial improvement across several domains, most notably with digital sources where the differences are most evident.
Analog Performance
On vinyl source (Planar 2 ND3 + Tube Box S2), the A7 brings a subtle yet coherent shift:
Reduction of power line hum (-3 to -6dB): The turntable's electronic hum, clearly audible at startup with the Tonewinner, is significantly reduced. This results from the A7's superior damping factor (>300 vs ~150 Class D) which locks mechanical motor vibrations more effectively.
More detail and clarity: Genesis "Selling England by the Pound" reveals tighter instrument separation, particularly in orchestral passages. The Tube Box S2 coloration is present, but amplified more musically. Controlled warmth: The Class A/B signature adds no audible distortion, but rather a psychoacoustic "richness" that enriches the tonal palette without masking nuance.
Digital Performance (WiiM pro + Tidal Hi-Res)
This is where the transformation is most spectacular and profound. The A7 Class A/B completely transforms musical presentation from digital sources compared to the Tonewinner Class D. Instrument separation (Jazz) Dave Brubeck Quartet's "Take Five" reveals impressive instrument separation. Each instrument occupies distinct space without becoming "analytical" or fatiguing. Piano, bass, and drums emerge clearly with natural musical coherence.
Bass depth and texturing On Melissa Laveau's "My Boat," the upright bass gains remarkable depth, rumbling with presence and control. Her voice becomes pure and natural, enveloping without excessive warmth. This is the decisive point: "sharp AND warm" rather than "sharp OR warm."
Complex clarity (Acoustic instruments) Miryam Solomon's "Romance": The zither remains "sharp" (detailed) while gaining warmth that makes it infinitely more musical. This balance is the signature of well-calibrated Class A/B: less pure analytical clarity (-0.5dB hi-freq), but +25% more perceptually alive.
No listening fatigue over extended sessions (Electronic) Alan Walker's "Faded": Vocals remain crystalline in the highs without ever fatiguing, even over 2-3 hour listening sessions of multiple songs . The electronic melody remains enveloping. The contrast with the Tonewinner is striking: Class D can become aggressive after 1-2 hours; the A7 invites listening.
Bass energy control. Massive Attack's "Angel": Basses never sludge, they breathe. With the A7, they are well controlled, never stifled. The electronic snare gains surgical precision with zero parasitic noise.Precision in heavy metal Double bass drum (Gojira, Fear Factory): Tight and precise. Zero "boomies," zero perceptible compression even on dense passages.
Atmos 7.1 Cinema Performance
In cinema mode, the A7 performs similarly to the Tonewinner AD-7300+, with a slight advantage in sonic warmth.
Power reduction (-33% RMS): The A7 offers 200W RMS@8Ω vs 300W for the Tonewinner. At casual listening comfort levels this difference is imperceptible.
Conclusion
Overall verdict: The Summit HiFi A7 represents a genuinely significant upgrade over Tonewiner ad7300 or for any setup prioritizing music reproduction or more raw power when connect to an existing AV accepting external amp.
Decisive factors:
• +20-25% in digital: Transformative. The difference is not subtle; it's audible within 5 minutes.
• +15-20% in analog: Appreciable and consistent with damping factor theory.
• No cinema regression: No noticiable difference for movies comparing to Tonewiner.
• Net psychoacoustic gain: Not just more detail (clarity), but more musical life (warmth + engagement). A solid 3 years warranty.
And of course, a canadian business owner, Aamir, that offer and incredibly hight level of services. Notice how many times he is mention on reviews? No, that's not a joke.
Test Setup
Amplification
• Summit HiFi A7 (7-channel, Class A/B, 200W RMS@8Ω, >300 damping factor)
• Preamp: Anthem MRX 740 (Atmos processing, ARC Genesis calibration)
Speakers (Atmos 7.1)
• Fronts L/R: 2x GoldenEar BRX
• Center: 1x GoldenEar SuperSat 60
• Surrounds L/R: 2x GoldenEar SuperSat 3
• Heights: 2x GoldenEar Invisa 850
Subwoofers
• 2x Summit HiFi Pretium 15
• Crossover: 120Hz LFE
Analog Source (Vinyl)
• Turntable: Rega Planar 2 ND3
• Phono Preamp: Pro-Ject Tube Box S2 (signature: +3dB@150Hz, +1.5dB@1-3kHz, vintage 1970s coloration)
Digital Source
• Streamer: WiiM pro
• Service: Tidal Hi-Res
Bought this power amplifier a few months ago to drive the LCR channels in my 7.2.4 home theater. This thing packs plenty of power and the build quality is solid. Aamir is a great guy to deal with and he called me to answer all my questions and later to confirm the order. Definitely going back to him for any AV upgrades in the future.
Going on 2 years with 3 processors and i was hoping it would hav two key features.. 1. I wish the Speaker Distance was in Feet and not in Millimeters. 2. And their is no setting for Small or Large Speakers to send All Bass to subs.. Other then that i jus turned down the bass in my tower speakers... So, when i listen to music in 2ch there's no bass. I hav to adjust EQ to add bass... Besides that this is a AWEsome processor...
I bought this amp a couple years ago still kicking ass and when watching movies like Kandahar the bombs dropping scenes sounds and feels like my house is on the front line such a great purchase and Summithifi support is absolutely amazing.
First of all, I’d like to commend Amir on his personal service and true advice… this amp is a power monster, but still has refinement of amps twice the price… a great addition to my 11.3 set up ….highs are crisp and clear and the lows are punchy and demanding perfect for music or theatre. Fast shipping and as I have already said customer service is top notch… they are in your corner for whatever build your up to….. thank you Summit…I’ll be back😎
Great service and superb product.
Absolutely fantastic service from Amir and now have stellar Pretium subs and dual TW 8300s.
I am pleased with this 11 channel amp. There were a few minor hiccups when setting it up, caused by mislabeled speaker outputs, but once I sorted out which outputs went to which speakers, it was fabulous. I’m waiting to receive a full compliment of new speakers, which should be a major upgrade from what I have now. Excited to hear them on this new amp.
A bit buggy..but sounds amazing! Looking forward to ART :)
I’m sorry, but due to my Villa being renovated, I haven’t had time yet to connect it. I would love to do your survey as soon as I have connected it. Because I’m going back to the UK on on Sunday and not returning to the 8th of October it will probably be mid October before I actually get it connected and carry out the review
I've waited for several weeks so I could use the AT-600 after the 2 FW updates to post a fair review. Coming from an Onkyo RZ70 using Dirac + DLBC that performed well, I was pleasantly surprised with the slight improvements of a little more detail in sound, improved channel separation as well as more bass impact. RZ70 had to use +10 bass boost to achieve adequate bass and AT-600 I have set to flat with the same results! Very happy with that. As other users have reported on forums, my AT-600 also has occasional issues with losing audio, and lip sync misalignment when switching sources however this is remedied through switching inputs or restarting my Amazon streamer. Yes it takes longer to initialize when turning on vs competing products, more cumbersome with USB FW updates, still has some room for improvement in stability but overall I am happy with my purchase. As is well known, Amir is a pleasure doing business with and I recommend considering the AT-600.
Processing of the signals is outstanding. Labels on the rear were not correct, and the limited instructions led to three days of setup sessions before I figured out what was causing the wrong speakers to fire. The company that sold it to me is outstanding to work with, and you get to speak to the owner himself, on an actual phone call. If it weren’t for the setup frustration and poor instructions it would be a five all the way.
It took me several days to get the system working correctly. This is because the silk screen labels on the back of the equipment do not necessarily match the real layout of the processor outputs and amp outputs. I had to mix and match cables to various labels that were incorrect. However, once I got this all figured out, the system produces outstanding sound. I am not yet finished running all of my more intricate tests, but I do have enough listening invested to know that the ATT 600 and the 11 channel amplifier that I purchased are producing as advertised. Aamir is fantastic to work with. He will speak with you personally and walk you through anything you need.
Excellent transaction!
So much better than I expected.
Summit Hi-Fi "A11" Gen 2 – 11-Channel Toroidal Power Amp with 10.1" Display – Sold Out
Amir was absolutely stellar making this happen and was on top of his game from A2 inquiry to deliverable. Top quality audiophile 2 channel amplifier. Not too many gadgets to worry about setting up. Plug and play or connect your favorite pre-amp DAC for your streaming requirements and it's great sounding. Finding the matching pre-amp and speakers to optimise this beasts audiophile power is key to finding your sweet spot sound. Can't wait for Summit tower speaker line up to hit the market soon to go with the A2. Thanks Amir for this gem