Unless I need something to heat up my room, I think I'll stick with Vidar over Aegir. By pretty much any measure, the numbers speak for themselves. However, I don't have speakers that are efficient enough to really "take advantage" of a lower power Class A type of amp.
Best,
Aegir:
Power Output:
Stereo, 8 Ohms: 20W RMS per channel
Stereo, 4 Ohms: 40W RMS per channel
Mono, 8 ohms: 80W RMS
Frequency Response: 20Hz-20Khz, -0.1db, 3Hz-500KHz, -3dB
THD: <0.01%, 20Hz-20KHz, at 20W RMS into 8 ohms
IMD: <0.01%, CCIR, at 20W RMS into 8 ohms
SNR: >112db, A-weighted, referenced to full output
Damping Factor: >100 into 8 ohms, 20-20kHz
Gain: 12 (22dB)
Input Sensitivity: AKA Rated Output (Vrms)/Rated Gain. Or, 14.3/12. You do the math.
Input Impedance: 22k ohms SE, 44k ohms balanced
Crosstalk: >95dB, 20-20kHz
Vidar2:
Power Output:
Stereo, 8 Ohms: 100W RMS per channel
Stereo, 4 Ohms: 200W RMS per channel
Mono, 8 ohms: 400W RMS
Frequency Response: 20Hz-20Khz, +/-0.03db, 3Hz-500KHz, +/-3dB
THD: <0.004%, 20Hz-20KHz, at 100W RMS into 8 ohms
IMD: <0.005%, CCIR, at 100W RMS into 8 ohms
SNR: >123dB, A-weighted, referenced to full output
Damping Factor: >100 into 8 ohms, 20-20kHz
Gain: 20 (26dB)
Input Sensitivity: AKA Rated Output (Vrms)/Rated Gain. Or, 28V/20. You do the math.
Input Impedance: 22k ohms SE, 44k ohms balanced
Crosstalk: >90dB, 20-20kHz