TW AD-2500 - 2 channel Amp 2X500W@8Ω

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  • Regular price $1,499.00

The AD-2500 power amplifier is the end result of many years of experience designing and refining audiophile power amps. Whether you're watching a movie or listening to live concert the AD-2500 amplifier will give you a new level of audio realism with exceptional sounding with our short signal path Class A/B output & efficiency of the Optimized Class “H” Technology.

New AD-2500 power amplifier presents the latest advancements in amplifier technology. The AD-2500 is built to the strict quality and performance standards set by Summit Hi-Fi & ToneWinner. We’re proud to offer you this exceptional audio component that will bring you many years of enjoyment and dependability.


Tone Winner Amplifier AD-2500PA

Audio Specifications:

  • Topology: Fully discrete, dual differential, high current, short signal path Class A/B - Class "H" power supply.
  • Numbers of Channel: 2 Channels - High powered single channel modules.
  • Power Output: ( Rated Power; THD <0.1% @ 115V (Tested @ AC 115V) - (AC 240V Will Increase the output wattage and maintain the THD<0.1%.)
  • 500 watts RMS/channel; 20 Hz – 20 kHz; THD<0.1%; 8 Ohms; one channel driven.
  • 899 watts RMS/channel; 20 Hz – 20 kHz; THD<0.1%; 4 Ohms; one channel driven.
  • 478+ watts RMS/channel; THD<0.1%; 8 Ohms; two channels driven..
  • Power Bandwidth (at rated power; 8 Ohm load): 20 Hz to 20 kHz (+ / – 0.1 dB).
  • Broad-Band Frequency Response: 10 Hz to 59 kHz +0/-2 dB.
  • THD + noise: < 0.0045%; at 100 watts RMS; 1 kHz; 8 Ohms.
  • Signal to Noise Ratio (8 Ohm load):
  • > 110.6 dB; ref FTC rated power; unbalanced input (A-weighted).
  • > 96 dB; ref 1 watt; unbalanced input (A-weighted).
  • Minimum Recommended Load Impedance (per channel): 4 Ohms (which equals one 4 Ohm load or two paralleled 8 Ohm loads).
  • Damping Factor (8 Ohm load): > 121.
  • Input Sensitivity (for rated power; 8 Ohm load): 2.1 V.
  • Gain: 29.81 dB.
  • Maximum Power Consumption: 1700 watts.
  • Power Supply: 110V-240V: 15 Amps - 20 Amps Auto Switching Class "H"Power Supply.
  • Material: Aluminum
  • Modules: Separate Heatsinks for individual modules. 
  • Color: Black
  • Front Panel: Analogue meter with blue LED lights and Red Needle. 
  • Weight: 22.4KGS ( 51.37 Lb)
  • Unit size: 17.48 L X 17.52 W X 7.6 H Inches
  • Package size:22.52 L X 22.52 W X 12.64 H Inches
  • Accessories: Power cord cable.
  • Warranty: 2 years warranty

Customer Reviews

Based on 9 reviews
tw ad 2500

very satisfy in music this amplifier mutch power but sound very smouth ,I like.

Summary part 1

I did my online order on a Wednesday.

My fist surprise was to receive a call from Aamir the same day to confirm they received it and to thank me for it. How many times did I receive a phone call just to confirm and thank me for a purchase I did over Internet? Never. First time. This is the kind of Customer Service that other companies should take note of.

My second surprise was to receive the shipment Saturday of the same week. For a delivery from Ontario to Quebec, especially with all delivery companies experiencing delays in these days, that was amazing. The amp was professionally boxed too. And the shipping was free!

The third surprise was the amp itself. What a tank. Over 50 lbs, massive, with very hi-end components. Obviously, this amp is built to last and to deliver.

I just finished installing it in my system and I will test its audio qualities over the next days. But I’m very confident. I will let you know soon about my listening sessions.

Sincerely, congratulations to you guys. I will recommend your company to anyone without hesitation.


Very happy, fantastic service and quick delivery. An immediate improvement all around, greater clarity and less fatigue on the highs, midrange was the biggest improvement with more detail where it seemed all washed together before and the bass is more accurate and just has more presence. The Polk RTI a9's the amp is powering are buy no means top tier audiophile gear but they are power hungry and this Amplifier definately woke them up, worth every penny! Amir is great, little details like a phone call to personally thank me for the order were a refreshing change from the big box stores.


I'm longing to purchase form China, through Chinese friend. I'm working in Dubai, but this brand and model not available audition. I believe and relay on other music lovers comments and reviews.

Hope my friend arrange this amplifier purchase.
Wonder if I order directly to Dubai for here what would be the price.

Thank you.

AD-2500PA is the very best

BLOWN AWAY !!!! This is the first thing I can say ... not only is it insanely powerful, it looks beautiful. I am running the amp with a Macintosh pre-amp and a Marantz NA6006 DAC driving a pair of VERY thirsty flagship Polk 707's and the result is one of the very best sound stages I have ever heard in my life. HUGE thank you to Amir for setting me up with one of these, now I just need the 5 channel to complete my surround room !!

Steve Heck