| Quantity | 3+ units | 10+ units | 30+ units | 50+ units | More | 
|---|---|---|---|---|---|
| Price /Unit | $28.93 | $28.34 | $27.45 | $26.27 | Contact US | 
                        Gravity Waves BLACK DOMAIN Tube Amp Attenuator Dummy Load Box for Tube Amplifiers ≤200W
                                                $143.04
                                            
                        Gravity Waves Tube Amp Bunker Tube Guitar Amp Attenuator Load Box and Cab Sim Combo (Silver)
                                                $414.91
                                            
                        20W Gravity Waves Bluespace White All-Tube Guitar Amplifier Guitar Tube Amp Combo with Stand & Pedal
                                                $1,490.66
                                            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.