note:

This is a pair of amplifier kits that you need to assemble yourself.

PCB size:76*120*1.6MM

Works voltage:  AC18V-0-AC18V   (AC15V-21V are all ok)

Output impedance: 4-8ohm.

Output power: 30W +30W   at 8ohm load

The GC version is the full name of Gaincard. It is a very good LM1875 circuit that has been optimized through repeated comparison verification. The frequency bandwidth, fineness, resistance, midpoint and stability

   General LM8175 single output is 4A current, the official index, low drive sensitivity, use BTL are useless, driving force will be powerless, using parallel output, you can double the drive current to 8A current. , so that the sound field is better, the mid-low frequencies are more full, and the power is also improved

Highlight：

1:  ELNA 5600uF X8pcs, 44800uF total filter per channel, with SEP high-speed rectifier bridge + filter capacitor array, low power internal resistance, high dynamic response speed.

2: with UPC1237 protection circuit to protect your speakers, OMRON power relay, high reliability

3:Dual single independent channel design, physical 100% resolution, sound field width, positioning accuracy

4: Coupling capacitor using MKP 3.3UF, the overall performance is delicate, smooth, low-frequency powerful but not turbid.

Package Included:

 One pair Gaincard (GC) LM1875 Parallel Power amplifier kit 30W+30W amp L7-9