L40 200W Hifi Amplifier Board Power Amp Board Class A Class AB for Stage Home Professional Speaker

L40 200W Hifi Amplifier Board Power Amp Board Class A Class AB for Stage Home Professional Speaker

Features:
- L40 hifi amplifier board.
- With eight transistors.
- Proven differential circuitry guarantees timbre.
- Using 4 pairs of transistors for output per channel (original transistors TTA1943 and TTC5200 for Toshiba). It meets general power requirements. It also has high power and enables a lot of sound details. This is a good choice for DIY amplifiers.
- Quiescent current regulation is also included on the board. Users can adjust it to Class A amplification to listen to warm sounds (when adjusting to Class A amplification, please add a large heat sink).
- One amplifier board for one channel. The default is Class AB output when shipping (Class A can be adjusted by yourselves).
- Using brand new imported TTA1943 and TTC5200 paired transistors for Toshiba, ensuring timbre.

Specifications:
- Product name: L40 Hifi Power Amplifier Board
- Output power: 200W
- Impedance: input 100K; output 4-8 ohms
- Input voltage: DC ±40V (positive and negative voltages can be selected in the range of 20-63V)
- It is recommended to use a transformer above 300W and dual AC 30-45V to supply power to the power amplifier board after rectification with the rectifier board
- Dimensions: 195 x 87 x 33mm/7.7 x 3.4 x 1.3" (LxWxT)
- N.W.: around 0.2kg/0.4lb

Package Included:
- 1 x Power Amp Board

Note:
- It is assembled and has been tested. It comes without heat sink.

You can refer to the following picture to adjust the board to Class A. Please use a large heat sink (weights over 1kg/2.2lb on one side). After the adjustment is completed, the temperature of the heat sink should not exceed 60℃ when working for a long time.