Feature:

PCB Size: 160mm*110mmX1.6mm
 
Works Voltage:  Dual AC12-AC16V 
 
Basic parameters:
 
Effective Vp-p 23.47, Frequency response, 20 HZ-20 KHZ (+ 0.01, 0.09), signal-to-noise ratio:-90 DB or below, the dynamic response, more than 91 DB
 
Total harmonic distortion (THD) : < 0.007%
 
Intermodulation distortion: < 0.007%
 
Stereo separating degree: > 88 DB (1 KHZ)
 
Suitable 32-600ohm load.
 
HV-1 headphone amplifier Features:
 
1, Both flow and control, enhance the driving force and control, the sound field is broader; effectively solve the original A1 circuit to promote AKG, Sennheiser headphones series weak, poor control, the effect is very obvious!
 
2, 300MV earphone special protection circuit, the current all kinds of A1 are UPC1237 chip amplifier protection circuit to act as a headphone protection circuit, 1.2V protection es.
 
3, Omron power relay, smaller contacts than the small signal relay and copper, lower signal loss.
 
4, AMP within the op amp power supply alone to enhance the resolution
 
5, optimized to deal with higher signal to noise ratio
 
6. Suitable for all kinds of headphones, "Wild King" headphone amplifier
 
 
HV-1 headphone amplifier Specifications:
 
High-quality double-sided PCB, FR1.6MM plate, 1OZ copper, solder paste tin
 
Taiwan-made 1% precision colored ring resistors
 
Main Filter Electrolytic Capacitor: Updated to FK Series 3300UF 4 PCS,
 
Erased with electrolytic capacitors: warm sound system low resistance - Panasonic NXL audio master
 
Italy AV non-polar capacitor, the end of sound clean no sound
 
A1 Queen ST 33078N dual op amp, ST DB139-140 power output tube
 
Constant current bias circuit F BC550C-560C
 
 
RIFA 840 4U7 large volume coupling with MKP capacitors.
 
YS215A high-quality sound headphone jack (cross silver)
 

Package:

1PC HV-1 Headphone Amplifier Board




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