NEW finished HI-END Class A pre-stage headphone amplifier preamplifier field tube hifi power amplifier board
frequency:20-25KHZ
Signal-to-noise ratio:106dB
Magnification:8times
Static power consumption:18+18W
Zoom in:Single-ended RCA
Two sets can be used for balance amplification
Power supply range:AC dual 32-42V recommended dual AC 38V
Power supply mode:It is recommended to use a 50W transformer for each channel to supply power separately
Horn protection:
There is no protective circuit, so it is necessary to add a protective circuit board when making ear amplifiers
Total harmonic distortion:≤0.01%
Finished plate size:240mm (length) * 220mm (width) * 42mm (height includes 10mm column)
Shipping accessories:
Install a set of copper posts and screws; One manual without schematic diagram
The input field pipe is the original Toshiba K170BL, and the output is the original Hitachi
Dismantle airport management. Rectifier tube is ON Ansemy MR754
This board refers to the famous ELECTROCOMPANIE/Music Tour in Norway
The line voice is thick, powerful, round, smooth, sweet, high-frequency and beautiful
Non-functional, warm and courageous voice. Triple frequency equalization low frequency diving depth can
It is used to upgrade the Mark JC-2 and Golden Voice C200V front level of the store. Cold to voice
The hard and hard hearing system has significantly improved and improved.
Circuit structure:
Field transistor is used as differential input buffer circuit - differential amplifier circuit is repeatedly sent to the second stage
Buffer circuit - the main voltage amplification circuit is the last to the field switch output stage.
The power supply part adopts Wada voltage stabilizing circuit, the sound performance is admirable, differential transmission
The original Toshiba 2SK170BL field tube is used, and the voltage level is constant current tube
Flow, the original Hitachi dismantled the airport tube output.
Buyer DIY picture, for reference only
