AD-1 PA - 2 CH Amp Pure Class "A" 100 Watts & A/B 300w (8Ω)

  • Sale
  • Regular price $2,755.00


Introducing the Tonewinner AD-1PA Class A Amplifier, a triumph of engineering that sets a new standard in audio amplification. Meticulously designed and expertly crafted, this 2-channel amplifier represents the pinnacle of high-fidelity audio, delivering an auditory experience that is truly unparalleled.

Model: AD-1PA Class A Amplifier - 2 Channel

Prepare to be captivated by the sonic prowess of the Tonewinner AD-1PA Class A Amplifier. This amplifier is a testament to the fusion of cutting-edge technology and timeless craftsmanship, resulting in a sound quality that is rich, detailed, and immersive.

Key Features:

  • Pure Class A Amplification: The AD-1PA operates in pure Class A mode, ensuring that the amplifier is always on and delivering the highest quality sound. This design choice eliminates the need for switching and provides a continuous flow of pristine audio.
  • Uncompromising Sound Quality: With a focus on audio purity, the amplifier's circuitry is meticulously optimized to minimize distortion and noise, resulting in a faithful reproduction of your music's nuances.
  • Exceptional Power and Control: The AD-1PA boasts a robust power output that ensures effortless driving of even demanding speakers. Its dynamic control lets you experience the full spectrum of sound, from delicate whispers to thundering crescendos.
  • Premium Build and Materials: Crafted with precision and care, the amplifier features high-quality components that contribute to its exceptional performance and durability.
  • Elegant Design: The amplifier's sleek and understated design seamlessly blends with any audio setup, making it a versatile addition to both contemporary and classic environments.

With the Tonewinner AD-1PA Class A Amplifier, your music transcends ordinary listening and becomes a captivating journey through every note and melody. Whether you're an audiophile seeking sonic perfection or someone who simply appreciates the beauty of sound, this amplifier promises an experience that will touch your soul.

Audio Specifications: Pure Class “A” Amp

  • Topology: Class A/Class AB
  • Numbers of Channel: 2 Channels - (High powered single channel modules): Independent windings for each channel from transformer.
  • Power Output: ( Rated Power; THD <0.1% @ 115V (Tested @ AC 115V) - (AC 240V Will Increase the output wattage and maintain the THD<0.1%.)
  • 300 watts RMS/channel; 20 Hz – 20 kHz; THD<0.1%; 8 Ohms; Two channel driven.
  • 500 watts RMS/channel; 20 Hz – 20 kHz; THD<0.1%; 4 Ohms; one channel driven.
  • 320+ watts RMS/channel; THD<0.1%; 8 Ohms; one channel driven..
  • Pure Class “A” Mode 100 Watts at 8 ohms
  • Power Bandwidth (at rated power; 8 Ohm load): 20 Hz to 20 kHz (+ / – 0.1 dB).
  • Broad-Band Frequency Response: 10 Hz to 104 kHz +/-3 dB.
  • THD + noise: < 0.0016%; at 100 watts RMS; 1 kHz; 8 Ohms.
  • Signal to Noise Ratio (8 Ohm load):
  • > 116dB - 120dB;  FTC rated power; unbalanced input (A-weighted).
  • Minimum Recommended Load Impedance (per channel): 2 Ohms 
  • Damping Factor (8 Ohm load): > 200.
  • Input Sensitivity (for rated power; 8 Ohm load): 1.6 V.
  • Gain: 29.5 dB.
  • Maximum Power Consumption: 1200 watts.
  • Power Supply: 110V-240V: 15 Amps - 20 Amps Auto Switching Class A/AB Power Supply.
  • Modules: Separate Heatsinks for individual modules. 
  • Bi-Amp Option Available 
  • Full balance; holo symmetry; differential input; differential BTL output.
  • Each channel is equipped with 8 pairs of HI-FI power transistors 
  • 60A current output capacity. 
  • 1200W Toroidal transformer; 180000uF audio filter capacitor
  • Intelligent management of switching High/Low voltages ( Auto switch for 115/230V input power)
  • Class A/Class AB Auto/Manual switch
  • Multiple ways for protection: Overcurrent protection, DC protection, self-excitation protection, & overheat protection
  • Standby power consumption: ≤1W
  • Material: Aluminum
  • Color: Black
  • Front Panel: Silver 
  • Dimensions: 17.48 x 16.73 x 8.75 Inches 
  • Weight: 42kgs / 92.60LB
  • Accessories: Power Cable Included 

Prepare to be moved by the Tonewinner AD-1PA Class A Amplifier, where technology, innovation, and craftsmanship converge to create an auditory masterpiece that breathes life into your music and elevates your audio journey to extraordinary heights.

    Customer Reviews

    Based on 6 reviews
    Trevor Murray
    AD-1 PA

    This is my first time owning a Class A power amplifier and I can't be more impressed with the build and power quality of this amp. I'm using Infinity SM 150 studio monitor speakers and they sound amazing for 35-year-old speakers. I would like to give a shout out to Aamir, what an awesome salesman who will make your purchasing such a pleasure. Thanks Aamir & Summitt Hi-Fi I can't be more Happier

    Jay H
    Tonewinner AD 1PA - Very Impressed!

    I recently purchased a pair of Paradigm Founders 100f for 2 channel enjoyment but was looking for an amp to power. I have tried a few amps in the past in various applications and again decided to try something new. I have purchased - SVS Elevations, Ultra Surrounds and Ultra bookshelves from Summit so I gave Aamir a call to see what he had. After chatting I decided to pull the trigger on the Tonewinner AD 1PA to power my new founders, I am very happy I did as the AD 1PA makes my founders sing. I have about 60 hours on both at this point and not looking back. Thanks Aamir!

    Jesus Orta

    AD-1 PA - 2 CH Amp Pure Class "A" 100 Watts & A/B 300w (8Ω)

    Bryan Wilson
    Tonewinner AD-1 PA is an absolute winner!

    I preface this review by stating that I am not an audiophile in the sense that I do not spend thousands and thousands of dollars on my system. I do not buy, sell and replace pieces. Having said that, I know what I like. Above all I like good sound.
    Many thanks again to Aamir for his sage advice and incredible customer service! He really took the time to understand what we needed and this fits the bill. We use the AD-1 PA solely for music. We have 2 separate zones that need to be played separately or together and needed something that wouldn't lack power. The Tonewinner amp blew us away. The sound is clear and warm and stays that way even when you increase the volume. No noticeable distortion. It handles providing amazing sound whether we are using high volumes while having a party with friends or if we are just sitting listening to music over a glass of wine. My only problem is I had to carry the thing up the stairs. Thanks Aamir. We'll be in touch soon lol.

    John H, Calgary AB
    Tonewinner AD 1PA

    I have been a loyal customer with Summit HiFi for a few years now. I really enjoy trying new gear in my system. So far I have purchased quite a few items, including; SVS prime pinnacles and center, SVS SB4000, and a SB3000 sub, NAD M17v2 processor, Legacy Classic HD, and Silver screen center ch, and 2 Tonewinner AD 5180 5 ch amplifiers so far!! Some pieces I have since sold and upgraded. I use my system mostly for music lately and really enjoy it. But still love watching movies too!
    For 2 ch I had a pair of PS Audio M700 Monoblocks, which were great and very much enjoyed them. Aamir always teased me, saying the Tonewinner AD 1PA would be an upgrade. I really like the TW product, I still have the two 5ch amplifiers. A friend, who has a You Tube channel, here in Calgary, has the TW AD 1PA amplifier. We did a comparison between my PS Audios and the AD 1PA. Aamir was not kidding about the AD1PA regarding how good it is!! That was 3 weeks ago. I called Aamir that day, and humbly said "you are right, again!!!" The mono blocks are now gone, and within 4 days I had the TW AD 1PA at my door!
    I have about 30 hrs on the TW now. I am very impressed so far! and it just gets better! All my listening has been in Class A. This Amplifier is by far the best I have ever experienced. The 3 dimensional soundstage, instrument separation, layering, imaging.... just fantastic! Live recordings have "Air" and great depth. Highs sound "real" no excessive sharpness or harshness with great detail, vocals sound so natural its amazing! The bass is "Anvil" solid, deep and extremely accurate. I have listened for many hours at a time, had to force myself to stop. This is one serious Amplifier with BIG legs! Has huge power, with finesse of a Surgeon. It will drive any speaker out there. This TW AD 1Pa is truly a high end audio product, build quality, its sonic attributes, and looks truly exceed its price. Even double! I must thank Aamir for his honesty, knowledge, and impeccable customer service and support! Ps, BUY this Amplifier!