Topping A30 Desktop Headphone Amplifier - Not DAC, Speakers 

$170
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  • Date Listed12/01/2017
  • ConditionNew
A30 received a lot of praise during the exhibition.
A30 can build a suit set with D30 and other mini speaker amplifier (other products and the shelf need to be purchased separately). This can be a good alternative to the Schiit Headphone Amplifier + DAC bundle.

Overview:
– Two outputs for different impedance of the headphone: 3.5MM and 6.35MM headphone port, can be used for a variety of headphones and earbuds.
– Two kinds of operating voltage mode and three kinds of gain (0dB / 9dB /18dB) selection mode.
– A30 uses the high-performance TI HIFI chip OPA161, OPA2134 (changable) and TPA6120.
– Maximum output power of A30 can reach up to 1551mW * 2.
– Aluminum body, each part is through high automation, high-precision machining creating (Laser engraving).
– Power by a special customized three-way high-performance linear power supply
Most competing products use 1x15V or etc adapter to the amplifier, this 1x15V will be convert inside the amplifier and cause noise and interference. But we use linear power adapter to provide 2x15V and 1x8V to A30, which help A30 avoid these problem. 2x15V used for high fidelity headphone amplifier circuit. 1x8V used for MCU, LED and relay. Less noise, less interference.
– Using Hi-fi grade NEC relay, WIMA capacitance, Nichicon FW series HIFI electrolytic capacitor, ALPS potentiometer etc

Specifications:
Analog input 1 x RCA (L + R)
LineOUT 1 x RCA (L + R)
Headphone output 1 x 6.35 headphone jack; 1 x 3.5 headphone jack
Unit weight of 525g (not including the adapter)
Unit Size 17.0 cm x 12.2 cm x 3.8 cm

The recommended load impedance range: 16-600Ω
Maximum output power:
1551mW x 2 (PO = Hi, 6.35 headphone port, RL = 32Ω, THD + N = 1%)
291mW x 2 (PO = Hi, 6.35 headphone jack, RL = 300Ω, THD + N = 1%)
152mW x 2 (PO = Hi, 6.35 headphone jack, RL = 600Ω, THD + N = 1%)
757mW x 2 (PO = Hi, 3.5 headphone jack, RL = 32Ω, THD + N = 1%)
258mW x 2 (PO = Hi, 3.5 headphone jack, RL = 300Ω, THD + N = 1%)
143mW x 2 (PO = Hi, 3.5 headphone jack, RL = 600Ω, THD + N = 1%)
The output voltage swing:26.6Vpp
Typical Distortion (@ 1kHz) :
0.0019% (RL = 32Ω, G = 0dB, IN = 0.5Vrms)
0.0003% (RL = 300Ω, G = 9dB, IN = 0.5Vrms)
0.0006% (RL = 600Ω, G = 18dB, IN = 0.5Vrms)
Frequency response: 10 – 200kHz
Input Sensitivity:
10.0Vrms (PO = Hi, G = 0dB)
3.3Vrms (PO = Hi, G = 9dB)
1.2Vrms (PO = Hi, G = 18dB)
Bottom noise (A-weighted):
2.2uV (G = 0dB, RL = 32Ω)
3.2uV (G = 9dB, RL = 32Ω)
8.2uV (G = 18dB, RL = 32Ω)
Gain : 0dB / 9dB / 18dB
Signal to noise ratio:
126dB (PO = Hi, G = 0dB)
121dB (PO = Hi, G = 9dB)
111dB (PO = Hi, G = 18dB)

Packaging list:
Packing List 1 x A30
1 x Liner power adapter with UK plug (Note: Most oversea online sellers especially in china using 2 pin flat plug)
1 x Operating Instructions

Note: The D30 and the mini rack are not included. They can be purchase Separately


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Ang Mo Kio, Singapore
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