CHUBAN T7 Reference-Grade Burmester 909 Circuit 300W Audiophile-Grade Dual-Channel Pure Power Amplifier with RCA Balanced Input

Circuit features
T7 uses the Burmester 909 flagship amplifier circuit
Ultra-fast power amplifier circuit with fully symmetrical X-Amp design
DC interconnection, pure DC circuit, no capacitor in the audio path
High damping coefficient, can control any speaker freely
Dual-mono design, separate power supply for left and right channels, extremely high separation
Making materials
10 pairs, 5 pairs per channel, precision tested and matched Sanken tube king C2922/A1216 105A high output current capability
The small signal line and high current line in the machine are all made of Taiwan Teflon oxygen-free copper wire
Use 800w high-end Nippon Steel transformer
12 10000uF audiophile-grade large electrolytic LNA FOR AUDIO
With soft start at power on and perfect speaker protection circuit
High quality sound RCA and terminal
Specifications
Input sensitivity: 1.27Vrms
Input impedance: 33K ohms
Damping factor: 2000
Output power: 150w/8 ohms, 300W/4 ohms     RMS power, full power long-term stable output
Static power consumption: 120w
Power supply voltage: AC110V   or    AC220V
Chassis color: all silver  or   all black
Total weight: 19kg      Weight with packaging: 22kg
Total size: 430*380*150mm     Packaging size: 530*580*230mm
AP auxiliary design and parameter test       With 8 ohms 800W load test data
Output effective value: 34.2Vrms
Channel gain: 28.6dB 27.0 times
Residual noise: 29uVrms
Signal-to-noise ratio: 121.6dB
Dynamic range: 121.6dB
THD distortion: 0.00040%
THD+N distortion: 0.0020%
Intermodulation distortion: 0.005%
Input sensitivity: 1.28Vrms
Frequency response bandwidth: ±0.058dB
Input impedance: 33K ohms
Quality assurance
To ensure quality, each complete machine of Transsion undergoes comprehensive AP testing to ensure that the design indicators are met
Tests include: bandwidth, noise (signal-to-noise ratio), dynamic range, distortion, intermodulation distortion, channel separation, amplification, etc.
The whole machine is tested for 72 hours, the amplifier is tested for 1 hour at full load of 8 ohms, and the listening time is more than 1 hour

The 2022 balanced version has single-ended and balanced 2-way input

T7 Test

Super high performance amplifier module, each channel uses 5 pairs of Sanken tube king C2922/A1216!

T7 AP test data AP-assisted design and debugging, with amazing parameters