Topping PA5 II PLUS: Class D desktop amplifier 2×125 W

The Topping PA5 II Plus amplifier is a compact and powerful model that has a fully balanced design and an innovative Class D amplifier circuit that allows it to develop significant power of 2×125 W at 4Ω with low distortion. Excellent parameterization performed by the company’s engineers ensures clear, clean and deep sound reproduction without extraneous noise. At 5 W power and 4 ohm load, the THD+N level is less than 0.0004%.

The PA5 II Plus also features effective and comprehensive protection circuitry against overvoltage, undervoltage, short circuit, overcurrent and overheating.

Input features a choice of single-ended stereo RCA or two 6.35mm TRS jacks for balanced input. Output is via regular speaker terminals with banana plugs. A 12V trigger is located on the back of the device, allowing you to connect the PA5 II Plus to other devices to use the auto on/off feature.

Characteristics of Topping PA5 II PLUS:

• Item Type: Amplifier
• Amplifier Type: Class D
• Inputs: Single-ended stereo RCA/balanced Jack 6.35mm TRS
• Output: Acoustic terminal
• Trigger: 12 V Balanced input measurements THD+N (@ 1 kHz, A-weighted): < 0.0003% into 8 ohm 5 W load.
• THD+N (@ No-Weighted, 20kW): < 0.0006% @ 8 Ohm 5 W
• SNR: 124 dB (@max output, 1 kHz, A-Weighted)
• Dynamic Range: 124 dB (@ 1 kHz, A-weighted)
• Frequency response: 20 Hz – 40 kHz (±0.3 dB)
• Output Level: 65 Vpp @ 4 ohms / 68 Vpp @ 8 ohms
• Noise: < 15 µVrms (including A)
• Crosstalk: -106 dB (@ 1 kHz)
• Input sensitivity: 2.6V rms
• Gain: 19.2 dB
• Channel balance: 0.1 dB
• Output Power: 2×140 W @ 4 ohms, THD+N 2×125 W @ 4 ohms THD+N 2×85 W @ 8 ohms, THD+N 2×65 W @ 8 ohms, THD+N Single-ended input measurements THD+N (@ 1 kHz, A -weighted): <0.0004% @ 8 ohms 5 W
• THD+N (@ No-Weighted, 20kW): < 0.0006% @ 8 Ohm 5 W
• SNR: 121 dB (@max output, 1 kHz, A-Weighted)
• Dynamic Range: 121 dB (@ 1 kHz, A-weighted)
• Frequency response: 20 Hz – 40 kHz (±0.3 dB)
• Output Level: 65 Vpp @ 4 ohms / 68 Vpp @ 8 ohms
• Noise: < 15 µVrms (including A)
• Crosstalk: -90 dB (@ 1 kHz)
• Input sensitivity: 1.3V rms
• Gain: 25dB
• Channel balance: 0.1 dB
• Output Power: 2×140 W @ 4 Ohm, THD+N 2×125 W @ 4 Ohm THD+N 2×85 W @ 8 Ohm, THD+N 2×65 W @ 8 Ohm, THD+N
• Supply voltage: DC 38V 3A
• Standby consumption: <0.5W
• Dimensions: 129x166x41 mm
• Weight: 680 g
• Color: black or silver