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HA5000 Amplifier Board Spare Parts Kit Field Effect Class A Amp for DIY Audio
Description:
- The input takes Toshiba crystal sound field effect transistor 2SK370 as single difference one, fine timbre. The output takes high power field effect transistor J554 K2955. There is gain switch that can set amplification factor. Generally, if low resistance, OFF; 300Ohm can be ON, as well as for audio.
- Recommand transformer 30-50W, if it is super power audio, 100W transformer will be ok.
- The core circuit of HA5000 and input crystal tube is ok to ensure the lowest distortion. The resistor is 718 series.
- The blue capacitor is chemical industry LX series, better than Nikon and ELNA.
- Main capacitor dia.: 16-25mm
- There is a red switch, that is gain setting, can set the amplification factor.
- Original Neutrik 6.35 gold-plated headphone jack.
- Debug the adjustable resistance, then test voltage betwwen 1-3pin of LOA white resistance,40-60W, the static current is 100-200MA.
- When testing the white resistance, if no voltage, test it between 1-3pin, when close to 2V, there is voltage in 2pin.
Specification:
- CNC 1.6mm board
- PCB: 130*106mm
- Space between headphone jack and level: 45mm
- Main filter: 6800UF,headphone jack Ningbo,relay Horke
Schematic diagram: Click here
Note:
- This is the spare part kit, user have to weld and debug it.
- No Level,compatible with ALPS27 and ALPS16
- No chassis
Package included:
- 1 x Amplifier Board Spare Parts Kit
