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AD-PRO+

Pure Class "A" & Class A/B 

Fully Balance Pure Class-"A" 60 Watts & A/B 300 Watts Integrated Amplifier With Symmetrical Signal Path Design. 

AD2PRO+ is a Class "A" Integrated amplifier 

Circuit Topology

AD-2PRO+ applies a full balanced amplify circuit, which is full symmetric, full balance, differential input to BTL class "A" power output. It combines full symmetry & balance together to enhance the purity with wide dynamics, high transient  response & robust driving force.

Audio Specifications

AD-2PRO+ features two of our 300 Watts High-Powered Single Channel Modules 

Audio Specifications

Pure Class "A" Pure & Class A/B Auto Switch & Manual Switch

• Pure Class "A": 60 Watts RMS/channel; 20 Hz – 20 kHz; THD=0.0012%; 8 Ohms; one channel driven
• Class A/B Auto: 312 Watts RMS/channel; 20 Hz – 20 kHz; THD<0.1%; 8 Ohms; one channel driven
• Pure Class "A": 30 Watts RMS/channel; 20 Hz – 20 kHz; THD=0.0012%; 4 Ohms; one channel driven
• Class A/B Auto:  484 Watts RMS/channel; 20 Hz – 20 kHz; THD<0.2%; 4 Ohms; one channel driven
• Pure Class "A": 60 Watts RMS/channel; 20 Hz – 20 kHz; THD=0.0012%; 8 Ohms; Two channel driven
• Class A/B Auto: 293 Watts RMS/channel; 20 Hz – 20 kHz; THD<0.1%; 8 Ohms; Two channel driven
• Pure Class "A": 30 Watts RMS/channel; 20 Hz – 20 kHz; THD=0.0012%; 4 Ohms; Two channel driven
• Class A/B Auto: 442 Watts RMS/channel; 20 Hz – 20 kHz; THD<0.1%; 4 Ohms; Two channel driven
• Power Bandwidth (at rated power; 4 Ohm - 8 Ohm load): 10 Hz to 110 kHz (+ / – 0.1 dB)
• Broadband Frequency Response: 2 Hz to 110 kHz +0/-3 dB.THD + noise: < 0.0013%; at 100 watts RMS; 1 kHz; 8 Ohms
• Signal to Noise Ratio (8 Ohm load):
• > 116 dB; ref FTC rated power; unbalanced input (A-weighted).
• Minimum Recommended Load Impedance (per channel): 4 Ohms (which equals one 4 Ohm load or two paralleled 8 Ohm loads)
• Damping Factor (8 Ohm load): 400.5
• Gain: 39.7 dB
• Peak current Output: 60A 
• Transformer: 1000W Toroidal Transformer
• 860W transformer with 120,000 capacitance
• Maximum Power Consumption: Class A: <400W & Class A/B: <1300W
• Standby Consumption: 0.5W 
• Voltage: 120-240V
• Inputs: ( Optical, Coaxial, Balanced, RCA, MM/MC Phono 
• Outputs: ( Subwoofer Balanced/Unbalanced )
• Features: 24K Gold  RCA, XLR & Speaker Terminals
• Converter: D/A Converter by ESS Sabre ES9038
• Support:DSD/AIFF/ALAC/APE/DIFF/DSF/FALC/OGG/WAV/AAC/MP3/WMA/PCM/(MC/MM)
• Audio Condenser: 80,000uF custom made ESR audio condenser
• Chassis: Full Aluminum-Alloy Chassis 
• Size: 17.5 W X 8.9” H X 16.7” D
• Weight: 79 lb
• Accessories: Remote Controller & Power Cord Included 

Balanced Amplifying Circuit

It adopts a symmetrical, balanced, differential circuit and the sound is transmitted through a BTL output configuration. This circuit helps to bring better sound with lower distortion and more purity.

Long Term Pursue

30+ years pursuing in AD series amplifier

The new version, new chips

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 to reduce interference and improve the sound effects.

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 a one-click switch among these modes.

High power & one-click switch

200W for each channel to drive the most famous speakers. Use the remote control to achieve a 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

Operational Amplifier

It adopts 9 OPA1656 optional amplifiers from Texas Instruments 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 1941/5198 for bright treble, bloat mid-range and sonorous bass. 

Volume Controller Chip

It adopts an NJW 1195A volume controller chip with -118dB low noise and a 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.