Specifications

Vacuum Tubes:		2 x 300B, 2 x 6SL7GT
		2 x 5AR4, 2 x OD3
Lamp type		1/4 X 1 1/4, 12 volt, .15 amp
Fuse type	120VAC operation:	MDL2, 2 AMP / 250 Volt
	220VAC operation:	MDL1, 1 AMP / 250 Volt
		SLO-BLO
Gain		18 dB at max Volume
		1 volt in = 8 volts out
Noise Floor		typically -70 dB 1Hz - 100 kHz
Signal to noise		typically 105 dB A WGT 20-20K
Frequency Response		5 Hz to 50 kHz @ +/- 1 dB
Distortion		THD+N = -80 dB (.01 %)
zero "crossover" distortion, mostly 2nd harmonic, unmeasurable after 5th
Volume control "Left / right tracking"		1/10 dB
Volume control "steps"	-∞,-70,-60,-50,-46, -44,-42,-40,-38,-36,-34, etc, -12,-10, -6, 0
Input Impedance		100 Kohm
Output Impedance		100 ohms
Output Power (100 ohm Headphones)		1W (10 V RMS) (28 V P-P)
Output Power (600 ohm Headphones)		1W ( 25 V RMS) (70 V P-P)
Power Consumption		170 Watts (1.4 A @ 120VAC)

Manley Labs 300B owner manual Specifications