L28 350W 4ohm Mono Amplifier+Speaker Protected Board 1943/5200

L28 350W 4ohm Mono Amplifier+Speaker Protected Board 1943/5200

Description:
- Circuit board using 1.6MM thick PCB,
- Each mono channel four pairs of high-power tube.
- 350W 4-European output support.
- So far, the best amplifier control after the class.
- L-28 for the L20 upgrade products, the board of the speaker protection circuit upgrades and other
- L-28 has excellent control, low distortion, wide range of voltage support. High-power high-current output load.
- Bassoon four pairs per channel output, the maximum load current of 40A.
- Voltage support a wide range of installation of each channel can be any two pairs, four pairs of high-power tube.

Performance parameters:
- Power 200W (8R) 350W (4R)
- Voltage: DC + - 45V
- Rectified AC voltage range before the dual 18V AC to 34V AC dual
- THD = 0.009% 1K HZ 50W 8R
- SR = 35V / US
- Noise 92DBU
- EIN = 114 DB
- Frequency Response 20-20KHZ + - 0.5 DB
- 34 times the voltage gain
- All resistors are precision 1% precision resistors, power resistors are used, including the output precision.