B683 6J1 Valve Pre AMP Tube Pre Amplifier Volume Circuit Board DIY Kit AC12V
Channel type: 2.0 Stereo
Knob function: Power switch / volume adjustment
Material: Plastic + metal + electronic components
Input voltage: AC 12V, 0.8A /5.5*2.5 (mm) plug
Product size: 7.7 * 7.5 * 5.2cm
1. AC 12V input:
Using DC5.5 * 2.1 socket, 12V AC power adapter is available, you can also use 12V AC transformer, if you use 12V AC transformer, power lines need to solder on the circuit board. Remember: You can NOT use a DC power input, otherwise it does not work!
2. The left-channel input / right channel input:
Audio signal input, can be connected to mobile phones, computers, M3, MP4, and other music players.
3. The left channel output / right channel output:
The audio signal output terminal can be connected to the audio signal input amplifier, power amplifier boards.
4. The power switch / volume knob:
The knob counter-clockwise to turn down the volume beginning, when the volume down to the minimum, if it continues to rotate until the “ticking” sound, then the power off, the light goes off.
In the off state, turn the knob clockwise to hear “tick” sound, light is on, the power is turned on, then the volume is minimal, then continue clockwise rotation is to increase the volume.
8 x Electrolytic Capacitor 470UF / 35V
4 x Film Capacitor 1.0UF / 50V
1 x Electrolytic Capacitor 16V / 470UF
2 x Transistor D667
7 x Transistor B647
1 x Double Potentiometer 50K
5 x Diode 1N4007
2 x Tube 6J1
1 x Tube Holder
2 x RCA Socket
1 x Power Outlet
2 x Light-emitting Diode Blue
1 x Resistance 2.2 ohm 2W
6 x Resistance 4.7k
2 x Resistance 1K
4 x Resistance 47 ohm
2 x Resistance 2.2K
2 x Resistance 470K
2 x Resistance 200 ohm
2 x Resistance 100k
1 x PCB Item will be shipped within 24 -48 hours after full payment is received. The Item will be shipped by air mailNormally the shippment to worldwide is used to take 20 to 25 business days, exclude Sat & Sun. We only accept payment through Paypal. Payment must be received in 7 business days of auction closing. Please leave note for your special request in ebay note when you pay the order. Any special request cannot be accepted after 24 hours of payment, because most of orders will be processed instantly and same day dispatched. If the item is defect when you receive it or you are not satisfied with it, please return it within 14 days for a replacement or money back. But the items must be back in factory condition. Please contact us and double check the return address before you return it. If is item is defective in 3 months, you can return it to us. We will send you a new replacement after receiving the defective item. We care about our valued buyers, if you have any questions, our Customer Service staffs will be very glad to help you. We try our best to reply your email as soon as possible, please kindly allow 24 hours(working day) for us to response. Thank you. We greatly appreciate your POSITIVE feedback. Please do NOT leave negative or neutral feedback without any contact.
Category: Sound and Vision:Home Audio and HiFi Separates:Amplifiers and Pre-Amps
Location: Hong Kong