A1 Pre-stage NE5532 Version Tone Board Double AC12V~18V Power Supply
121
Direct purchase from the factory 
Tabbacin Biyan Kuɗi lafiya
Kyauta Kyauta
Manufar Jigilar Kaya
Manufar KomawaKyauta Kyauta
Barka da zuwa Roymall, shafinku na siyan kyaututtuka masu inganci. Muna girmama goyon bayanku, kuma muna ba da kyauta kyauta tare da kowane siyayya. Shirya don bincika tarinmu kuma ku sami kyaututtukanku masu dacewa.Manufar Jigilar Kaya
Za mu aika kayanku cikin kwanaki 2 bayan siyayya.Lokacin jigilar kaya yawanci kwanaki 5-7 ne.Saboda jigilar mu ta duniya ne, lokacin jigilar zai dogara da wurin ku.1. Manufar Komawa
Muna karɓar abubuwan da aka saya daga roymall.com kawai. Ba za a iya mayar da kyauta kyauta ba. Dole ne abu ya kasance ba a yi amfani da shi ba kuma a cikin yanayin da kuka karɓa.Za mu sarrafa komawar ku cikin kwanaki 3-5 bayan karɓa.Ba za a iya mayar da abubuwan da aka keɓance ba.Tuntuɓi mu. service@roymall.com ko Whatsapp: +86193598494712.Manufar Maida Kuɗi
Za ku sami cikakken maida kuɗi bayan mu karɓi abubuwan da aka dawo. Kuɗin jigilar kaya ba za a iya mayar da su ba.Tuntuɓi mu. service@roymall.com ko Whatsapp: +8619359849471
Product introduction:
Using A1"s preamp and volume control original circuit, it has the inherent advantages of easy assembly, good impedance matching and smooth sound quality. In terms of sound performance, it can broaden the sound field, increase dynamics, and enhance resolution. You can also change different dual op amps to adjust the sound trend according to your own preferences.
Most dual op amps can be used directly and can be directly exchanged for AD827N, OPA2604AP, OPA2132PA.
This circuit is divided into two stages, the first stage is responsible for buffering, and the second stage is used as feedback volume control
(Each op amp is responsible for one channel). Its characteristic is that the input impedance does not occur when the volume is adjusted
Variety.
The music fax A1 front-end line is very simple and good sound. The good sound lies in the negative feedback adjustment, but the potentiometer of the original A1 line to adjust the volume is in the feedback loop and acts as a feedback amplifier resistor, adjusting the gain to adjust the volume, but there is a feature The volume can"t be turned off, but the volume is still adjusted to the minimum.
Note: The coupling capacitor uses 100V1UF/105.
Working voltage: dual AC AC12V~18V, dual 12V transformer is recommended
Finished board size: 70*40*25=length*width*height (unit MM)
Net weight: 40g (within 5g error)
Package includes:
1 x NE5532 Version Tone Board
