TOPPING PA3s amplifier news featured

TOPPING new PA3s balanced Class D amplifier

In its unrelenting flurry of product releases, TOPPING has unleashed a new fully balanced power amplifier. The PA3s is a Class D amp, meaning it’s power-efficient and produces less heat than a Class A amp. That makes it perfect for a discrete bookshelf unit where heat can be an issue.

The PA3s is fully balanced and each channel is powered by its own Class D amplifier chip. This reduces crosstalk and provides better audio performance. In addition, it reduces the load on the amp chips, therefore, extending the longevity of the amp.

TOPPING PA3s front and back panels

With an output power of 80W x2 @ 4Ω, the PA3s can easily drive small to medium speakers. It has both fully balanced and single-ended inputs so you can connect it to multiple sources. Switch easily between balanced and single-ended inputs easily with the single front panel button.

Using the balanced input can eliminate potential ground loop problems and provide the optimal audio performance without hum. The TOPPING D10 Balanced that I recently reviewed here would be the perfect companion for the PA3s, being efficient and staying cool during use.

The TOPPING PA3s is available now on Apos Audio and comes with free standard shipping and an excellent Apos 2-year warranty. Check their store page here for more info.

TOPPING PA3s Specifications

  • Single-ended input
    • THD+N @1kHz (A-wt)
      • <0.005% @4Ω 5W
      • <0.004% @8Ω 5W
    • THD @20-10kHz (20kBW)
      • <0.008% @4Ω 5W
      • <0.007% @8Ω 5W
    • SNR: 107dB
    • DNR: 107dB
    • Frequency response: 20Hz-40kHz (±0.1dB)
    • Output level
    • Noise (A-wt): <70uVrms
    • Channel crosstalk @1kHz: -96dB
    • Input sensitivity: 0.92Vrms
    • Gain: 25.2dB
    • Channel balance: 0.5dB
  • Balance input
    • THD+N @1kHz (A-wt)
      • <0.0045% @4Ω 5W
      • <0.004% @8Ω 5W
    • THD @20-10kHz (20kBW)
      • <0.007% @4Ω 5W
      • <0.006% @8Ω 5W
    • SNR: 112dB
    • DNR: 112dB
    • Frequency response: 20Hz-40kHz (±0.1dB)
    • Output level
    • Noise (A-wt): <70uVrms
    • Channel crosstalk @1kHz: -100dB
    • Input sensitivity: 1.75Vrms
    • Gain: 19.5dB
    • Channel balance: 0.5dB
  • Output power
    • 80W x2 @4Ω THD+N <10%
    • 45W x2 @8Ω THD+N <10% 
    • 65W x2 @4Ω THD+N <1%
    • 37W x2 @8Ω THD+N <1% 
  • Adapter impedance: 4-8Ω 
  • Dimensions: 6.6” x 4.7” x 1.5” (16.8 x 12 x 4 cm)
TOPPING PA3s and D10 Balanced stack
Founder of Prime Audio
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