TOPPING PA3S Fully Balanced Class D Amplifier

Introducing the Topping PA3s, a powerhouse of a fully balanced Class D power amplifier designed to breathe life into your HiFi speaker setups. This amplifier is equipped with two independent MA12070 class D power amplifier chips for each channel, delivering remarkable power output to effortlessly drive both bookshelf and floor-standing speakers. Its balanced architecture allows seamless integration with Topping's latest TRS Balanced DACs like the D10 Balanced and E50.

Dual Independent Class D Power Amplifier Chips: The Topping PA3s is armed with two independent MA12070 class D power amplifier chips, one for each channel. These powerful chips offer robust amplification with minimal distortion and crosstalk. The use of independent chips for each channel reduces the load on each chip, thereby enhancing overall stability and prolonging the chips' lifespan.

Impressive Power Output for Speaker Brilliance: To fully unleash the potential of your HiFi bookshelf and floor speakers, they require a clean and powerful source of energy. The Topping PA3s delivers, offering an impressive output power of up to 80Wx2 @ 4Ω with THD+N at 10%. Even at 1% THD+N, it provides a substantial 65Wx2 @ 4Ω, ensuring your HiFi speakers come to life with precision and clarity.

Balanced & Single-Ended Input Versatility: With the PA3s, you have the flexibility to connect your audio source using either single-ended RCA or Balanced TRS connections. Opting for the balanced input eliminates potential ground loop issues, resulting in a cleaner, noise-free audio background. Switching between these input options is a breeze, thanks to the user-friendly front-panel button.

Fully Balanced Class D Amplification: The Topping PA3s represents the epitome of a fully balanced Class D power amplifier, offering an efficient and budget-friendly solution to power your bookshelf or floor-standing speakers. As a balanced amplifier, each channel benefits from its dedicated amplifier chip, significantly reducing crosstalk and enhancing audio performance. Additionally, being a Class D amplifier means it operates with exceptional efficiency compared to Class A amplifiers.

The Topping PA3s stands as a remarkable addition to the world of HiFi audio amplification. With its dual independent MA12070 class D power amplifier chips, this fully balanced amplifier offers the perfect blend of power and precision, capable of breathing life into your HiFi speakers. Whether you prefer bookshelf or floor-standing speakers, the PA3s' impressive power output ensures a captivating audio experience. Its versatile input options, including balanced and single-ended connections, cater to a wide range of audio sources while eliminating potential noise issues. The PA3s represents the pinnacle of efficiency with its Class D amplification, delivering exceptional audio quality while conserving power. Embrace the future of HiFi amplification with the Topping PA3s and elevate your audio setup to new heights.

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 Level46Vpp@4Ω
48Vpp@8Ω
Noise (A-wt): <70uVrms
Channel Crosstalk @1kHz: -96dB
Input Sensitivity: 0.92Vrms
Gain: 25.2dB
Channel Balance: 0.5dB

Balanced 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 Level46Vpp@4Ω
48Vpp@8Ω
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