dsd decoding amplifier
dsd decoding amplifier
dsd decoding amplifier
dsd decoding amplifier

Tonewinner DSD decoding Hi-Fi class A integrated amplifier

AD-2PRO+ is a Class A integrated amplifier with optical, coaxial, balanced, RCA, MM/MC phono inputs and subwoofer balance/unbalance outputs. It supports one-click switch among Class A, Class AB and Auto modes. As a top 10 audio brand in China, Tonewinner has 30+ years experience in designing and manufacturing acoustic products. As an original supplier, Tonewinner always warmly welcomes distributors, partners and customers around the world.

  • Model

  • Channels

  • Power

  • THD

    ≤0.05% (1KHz,A weight)


DSD decoding Hi-Fi class A integrated amplifier



It handles DSD512 high class audio format to achieve PC Hi-Fi.

DSD digital decoding

ES9038 chip offers up to 22MHz signal lossless decoding and Hi-Fi sound.

Balanced Input

XLR audio ports

Less interference

Low distortion

Phono port, classic appreciation.

It supports MM/MC cartridges for easy compatibility.

The rich sound will take you back to the classic time.

Subwoofer Output

XLR/ RCA output ports connected to an active

subwoofer will truly meet the taste of bass fans.

Bi-wiring Connection

It supports standard connection and bi-wiring connection modes. When it's in the bi-wiring connection mode, treble and mid-bass are separately connected with the amplifier so as to reduce interference and improve sound effect.

Class A /AB /AUTO Modes

It has three built-in circuit modes: Class A, Class AB and auto-switch between Class A & AB, which is one of the symbols of our high-end Hi-Fi amplifier. Use the remote control to achieve one-click switch among these modes.

High power & one-click switch

240W for each channel to drive most famous speakers. Use the remote control to achieve one-click switch between integration mode and purely amplifier mode.

Decoding Chip ES9038

This chip enables it to decode multiple audio formats.

DSD decoding: DSD512, 256, 128, 64

PCM sample rate: 32bit/768kHz

Dynamic range: 129dB

Distortion: -120dB

High Sample Rate for High Quality Recording

Operational Amplifier

It adopts 9 TI OPA1656 optional amplifiers form Texas Instrumnets to form full balance amplification, bringing analytical and warm sound.

2 way optical inputs, 1 way coaxial input

and DSD lossless decoding.

High Power Transistor

A total of 24 Toshiba transistors 1943/5200 for bright treble, bloat mid-range and sonorous bass. 

Volume Controller Chip

It adopts NJW 1195A volume controller chip with -118dB low noise and 0.5dB adjustment step. Lower distortion and better channel separation.

High Capacitance

A total of 16 capacitors to offer 128,800μF 

capacitance for powerful driving.

High Power Transformer

860W toroidal transformer for strong power driving.

Wide Voltage Design

As an amplifier specially designed for audio users worldwide, it adopts its patented wide voltage design handling AC 110V and AC 220V.  

Multi-chamber Layout

The areas of input, power storage, power supply

and amplifying are separated into chambers so as

to reduce the interference

of free electromagnetic wave.

Remote Control Introduction

More Details

Black and white design.

Sleek linear.






SNR: ≥100dB (A-weighted)

Frequency response: 15Hz-95kHz (+1/-3 dB) 

THD: ≤0.05% (1kHz, A-weighted) 

Power output: 240W (THD: 1%, 1KHz, 8 ohm single channel)

Rated impedance: 8 ohms

Gain: 40dB±1dB

USB input support: DSD512, 256,128, 64; DoP 256, 128, 64; PCM16-32bit, 44.1-768kHz

Optical, coaxial input support: DoP64, PCM16-32bit, 44.1-192kHz

Class A static power consumption: 260W~320W

Class AB static power consumption: 70W~110W

Standby power consumption: <0.5W

N.W: 35.9kg         G.W: 41.8kg

Power supply voltage: ~110(60Hz)/220V(50Hz)

Dimension: 444x 254x 460mm (WxHxD)


Package dimension: 604X 407x 614mm (WxHxD)

Accessories: Remote control, power cord, optical cable, user manual, USB cable, certificate of qualification

≤0.05%(1kHz, A weighted)
≥100dB(A weighted)
Standby Consumption
Power Output
240W(THD=1%, 1KHz, 8Ω, one channel driven)
40dB ±1dB
Power Consumption
260W-320W(Calss A);
70W-110W(Class AB)
living room,theater&Karaoke room,demo room,bedroom,meeting room.
manual, certification, power cord, optical cable, remote control.


Overview of Functions

  • 1 way coaxial input and 2 ways optical digital inputs, coaxial support PCM and DSD decoding
  • 2 ways unbalanced and 1 way balanced input.
  • USB sound card, support 768k sampling rate PCM and DSD512 softwaredecoding/hardware decoding
  • Manual power-on/standby function, trigger power-on/stand by function.
  • Amplifier modes selection: Class A/Class AB/AUTO.
  • Amplifier and speaker output type selection: A group/B group/A+B group.
  • Front panel standby, work and protection display functions.
  • ~110v/~220v power supply automatic conversion function
  • 1 channel of each for unbalanced and balanced bass output.
  • MC(moving coily)MM(moving magnet) phono input.


Overview of Features

  • Adopt fully balanced, fully symmetrical, differential input to differential BTL power output Class A power amplifier circuit.
  • The input stage adopts a cascode amplifier circuit.
  • High circuit dynamics, high slew rate, low harmonic distortion, low noise, good transient response, high linearity, wide frequency response range, etc.
  • The voltage amplify stage adopts a common base circuit, which further improves the open-loop gain of the power amplifier and broadens the high-frequency response to the extreme.
  • The output stage adopts a three-stage Darlington driver, and the high-power audio dedicated famous tubes are output in parallel, which greatly improves the damping coefficient of the power amplifier.
  • The left and right channels are powered by an independent power supply, which greatly improves the separation of the power amplifier.
  • The preamp and power amplifier of the unit adopt the power supply mode of high and low back, which can give full play to the advantages of the circuit, so that the performance of the whole machine is further improved.
  • Using an 860W high-quality toroidal transformer, up to 120,000 microfarads of audio-specific custom capacitors, and high-power audio-specific famous tubes for parallel output, providing maximum current output capability.
  • 240W/8Ω power output for each channel, and abundant power reserve for driving high power demanded speaker easily
  • Using Tonewinner classic independent cavity isolation structure design to minimize the mutual interference and influence of various functions.
  • AD-2PRO+ is equipped with high/low voltage two-level power intelligent management switching circuit. The intelligent power supply mode can not only meet the high-fidelityclass A power output, but also meet the green concept of energy saving and environmental protection.
  • Perfect power amplifier protection circuits: short circuit protection, overheat protection, high frequency protection, DC protection, etc.


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Leave A Message
If you’re interested in our products or have any suggestions, please leave a message here, and we’ll contact you as soon as possible.