TOPPING A30 HiFi Headphone Amplifier

The Topping A30 Headphone Amp is a desktop amplifier meant to be paired with the Topping D30 or D30s. It can output 1551 mW at 32 ohms that can drive powerful headphones. The A30 comes in a full aluminum chassis with 0 dB, 9 dB, and 18 dB gain switch. It also has a high/low impedance switch, 3.5/6.35 mm headphone out, and a RCA line in and out ports.

Specs:

• Suitable headphone impedance: 16–600 ohms
• Maximum output power: 1551mW x 2 (PO=Hi, 6.35 output, RL=32Ω,THD+N=1%); 291mW x 2 (PO=Hi, 6.35 output, RL=300Ω,THD+N=1%); 152mW x 2 (PO=Hi, 6.35 output, RL=600Ω,THD+N=1%); 757mW x 2 (PO=Hi, 3.5 output, RL=32Ω,THD+N=1%); 258mW x 2 (PO=Hi, 3.5 output, RL=300Ω,THD+N=1%); 143mW x 2 (PO=Hi, 3.5 output, RL=600Ω,THD+N=1%)
• Maximum output voltage swing: 26.6Vpp
• THD+N (at 1 kHz): 0.0019% (RL=32Ω, Gain=0dB,IN=0.5Vrms); 0.0003% (RL=300Ω, Gain=9dB,IN=0.5Vrms); 0.0006% (RL=600Ω, Gain=18dB,IN=0.5Vrms)
• Frequency response: 10–200 kHz
• Input sensitivity: 10.0Vrms (PO=Hi, Gain=0dB); 3.3Vrms (PO=Hi, Gain=9dB); 1.2Vrms (PO=Hi, Gain=18dB)
• Noise (A-weight): 2.2μV (RL=32Ω, Gain=0dB); 3.2μV (RL=32Ω, Gain=9dB); 8.2μV (RL=32Ω, Gain=18dB)
• Gain: 0dB / 9dB / 18dB
• SNR: 126dB (PO=Hi, Gain=0dB); 121dB (PO=Hi, Gain=9dB); 111dB(PO=Hi, Gain=18dB)
• Analog input: 1 x RCA (L+R)
• Line out: 1 x RCA (L+R)
• Headphone output: 1 x 6.35mm, 1 x 3.5mm
• Dimensions: Approx. 6.7 x 4.8 x 1.5 in (17 x 12.2 x 3.8 cm)

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