Artemis Labs SP-1

The Artemis Labs SP-1 Stereo Power Amplifier is a no-compromise purist
design. It is designed to get the
most from the “super 300Bs” such as the KR 300BXLS and Full
Music 300B+, delivering from 13 to 18 watts
(depending on the tube type) of clean single-ended power. Careful power
supply filtering and regulation of
critical voltages ensure stable, quiet operation. All aspects of the
design were done by John Atwood of One
Electron™.

Stereo power amplifier on two chassis:

stereo amplifier and power supply.
Power output per channel before clipping:

14 Watts rms
Output impedances available:

4 and 8 ohms
Frequency response at 10 Watts output:

20Hz to 35KHz +/- 1dB
Maximum THD distortion before clipping:

3%
Input impedance:

100K
Input sensitivity:

0.8Vrms for full output power
Power consumption:

525 Watts
Line voltages available:

100, 110, 120, 220, 230, 240V (selected at factory), 50 or 60Hz

Input Impedance: 100K ohms.
Power Gain: 0.7VRMS in for 10W out (1KHz)
Frequency Response & Distortion: (measured with KR 300BXLS tubes)
1 Watt Output:
Frequency Response: 14Hz – 38KHz ± 1dB
THD+N at 1KHz, < 0.5%
10 Watts Output:
Frequency Response: 15Hz – 35KHz ± 1dB
THD+N at 1KHz, < 1.5%
Output for 5%THD (1KHz): 13 to 18W,
depending on output tube
Damping Factor: (1KHz, 5W): 4.8
Output Noise: (grounded input, 8 ohm output into 8 ohm load, rms
detector):
22Hz - 30KHz: < -88dB below 10W output
“
A-weighted”: < -105dB below 10W output
Crosstalk:
1KHz: < -81dB
20KHz: < -57dB
Mains Voltage: Wired at factory for one of the following voltages:
100, 110, 120, 220, 230, 240V, 50 to 60Hz.
Power Consumption when powered-off (rms): 2.3 Watts nominal
Power Consumption when powered-on (rms): 340 Watts nominal
Size:
Power Supply Chassis: 9 ½" (241
mm) Height, 12 ¼" (311
mm) Width, 13 3/8" (340 mm) Depth
Amplifier Chassis: 9 ½" (241 mm) Height, 12 ¼" (311
mm) Width, 16 3/4" (425 mm) Depth
Mass: Power Supply Chassis: 51 lbs. (23.2Kg)
Amplifier Chassis: 55 lbs. (25Kg)