66-100 Specifications and performance documentation
66-100; Frequency Response-
40W @ 4 ohms66-100; 
4.5W @ 100Hz - 4 ohms
16384-point spectrum using Hann window and 64 averages
Input RMS -20.2dB FS
Distortion at 102.1Hz, -20.2dB FS
Based on 8 harmonics
THD 0.639%
THD+N 0.644%
2nd harmonic 0.581%
3rd harmonic 0.188%
4th harmonic 0.138%
5th harmonic 0.103%
6th harmonic 0.048%66-100; 
18W @ 100Hz - 4 ohms
16384-point spectrum using Hann window and 64 averages
Input RMS -13.9dB FS
Distortion at 102.0Hz, -13.9dB FS
Based on 8 harmonics
THD 0.982%
THD+N 0.984%
2nd harmonic 0.696%
3rd harmonic 0.607%
4th harmonic 0.198%
5th harmonic 0.258%
6th harmonic 0.045%66-100; 
100W @ 100Hz - 4 ohms
16384-point spectrum using Hann window and 64 averages
Input RMS -6.2dB FS
Distortion at 102.0Hz, -6.2dB FS
Based on 8 harmonics
THD 1.487%
THD+N 1.488%
2nd harmonic 1.284%
3rd harmonic 0.575%
4th harmonic 0.300%
5th harmonic 0.292%
6th harmonic 0.100%66-100; 
4.5W @ 1kHz - 4 ohms
16384-point spectrum using Hann window and 64 averages
Input RMS -20.1dB FS
Distortion at 1,007.1Hz, -20.1dB FS
Based on 8 harmonics
THD 0.559%
THD+N 0.588%
2nd harmonic 0.481%
3rd harmonic 0.209%
4th harmonic 0.146%
5th harmonic 0.097%
6th harmonic 0.043%66-100; 
18W @ 1kHz - 4 ohms
16384-point spectrum using Hann window and 64 averages
Input RMS -13.8dB FS
Distortion at 1,007.1Hz, -13.8dB FS
Based on 8 harmonics
THD 0.835%
THD+N 0.837%
2nd harmonic 0.464%
3rd harmonic 0.612%
4th harmonic 0.196%
5th harmonic 0.253%
6th harmonic 0.037%66-100; 
100W @ 1kHz - 4 ohms
16384-point spectrum using Hann window and 64 averages
Input RMS -6.1dB FS
Distortion at 1,007.1Hz, -6.1dB FS
Based on 8 harmonics
THD 0.889%
THD+N 0.895%
2nd harmonic 0.500%
3rd harmonic 0.618%
4th harmonic 0.161%
5th harmonic 0.316%
6th harmonic 0.059%
66-100; 
4.5W @ 10kHz - 4 ohms
16384-point spectrum using Hann window and 64 averages
Input RMS -20.4dB FS
Distortion at 10,006.2Hz, -20.4dB FS
Based on 1 harmonics
THD 0.408%
THD+N 0.504%
2nd harmonic 0.408%66-100; 
18W @ 10kHz - 4 ohms
16384-point spectrum using Hann window and 64 averages
Input RMS -14.1dB FS
Distortion at 10,005.4Hz, -14.1dB FS
Based on 1 harmonics
THD 0.274%
THD+N 0.287%
2nd harmonic 0.274%

66-100; 
100W @ 10kHz - 4 ohms
16384-point spectrum using Hann window and 64 averages
Input RMS -6.4dB FS
Distortion at 10,005.1Hz, -6.4dB FS
Based on 1 harmonics
THD 0.329%
THD+N 0.599%
2nd harmonic 0.329%
*Output Power:  100 watts per channel into 4 ohms Ultralinear; 65 watts per channel (optional) Triode
*Distortion @ 1KHz, 100 Watts  / 4 ohms: THD .889%, THD+N .895% (see measurement data below)
*Frequency Response:  20 hz to 20 Khz (see measurement data below)
*Class AB operation, 40ma initial bias (adjustable)
*Input senstivity:  1.5 v p-p for full output
*Non-inverting
*Output impedance:  2 ohms
*Input impedance:  90K ohms
*Power consumption:  240 watts idle, 340 watts full power 2 channels driven 1Khz into 4 ohms
*Power line input filter -50dB @ 30Mhz
*Over 295 Joules of power supply storage
*Power supply fused on primary and secondary, with current inrush limiters on power line and B+
*65 lbs shipping weight
Measurement data: Click to enlarge
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