DPA-1B Pre-amplifier


Conventional Information

Size (W x D x H) (mm): 485*395*195mm
Separate Power Supply (W x D x H) (mm): 485*395*160mm
Net Weight 23.39kg(Main Unit+Separate Power Supply)

Conventional Information

Frequency Response: 5HZ~22KHZ(±0.5dB)
Total Harmonic Distortion(THD+N) : -118dB(DC~22khz Measuring Bandwidth, Unweighted)
Signal-to-Noise Ratio(SNR) : 110dB
Dynamic Range (DNR) : 116dB
Input Impedance : 100KΩ
Output Impedance : 66Ω
Line Level Output: XLR:9.6Vrms
Volume Adjustment Precision: 1dB 40 Levels
Total Gain: Six Channels with 0dB, +12dB, +20dB Options

Input and Output Interfaces

Analog Audio Input:

Balanced(XLR)*5 pairs
Unbalanced(RCA)*1 pair

Analog Audio Output:

Balanced(XLR)*1 pair

Power Supply and Power Consumption

Input Voltage Range: 100~240Vac/47~63Hz
Power Consumption: 52W
Standby Mode: 1W

Temperature and Humidity Requirements

Operating Environment Temperature: +5°C to +35°C
Operating Environment Humidity: 5% ‒ 85% (No condensation)
Storage Temperature: -20°C to +55°C


The DPA-1B is a fully balanced Pre-amplifier.

It includes two completely independent, non-feedback amplification circuits. The use of premium materials ensures that even without the application of feedback, there is sufficient bandwidth, ultra-low noise, and distortion. A series of precision resistor networks make up the constant impedance volume control circuit, allowing this pre-amplifier to deliver excellent sound quality at any volume level.

DPA-1B dual mono-block Pre-amplifier utilizes separate power supplies and groundbreaking AC-DC conversion through a switching power supply, making it capable of operating within a wide voltage range of 80-280V, completely resolving the power supply challenge that audiophiles find most difficult to address.

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