My first integrated amp was a nad 314 and I enjoyed the sound, so I picked up a few of their dedicated amps over the years (a 2155 is being sent my way as I type this-for $130).
I compared my nad 902 ($80), and 2100 ($120) bridged mono to run the left and right mains) to both an Adcom GFA-555mk2 and my 92 Elite amp section and these inexpensive amps provide a much more dynamic sound-stage than either of my other options.
Specs:
2155-
Continuous output power into 8½ * 55W (17.4dBW)
Rated distortion (THD 20Hz - 20kHz) 0.03%
Clipping power (maximum continuous power per channel) 65W
IHF Dynamic headroom at 8½ +3dB
IHF dynamic power (maximum short term power per channel) 8½ 100W
4½ 100W
2½ 130W
Damping factor (ref. 8½, 50Hz) >50
Input impedance 22k½
Input sensitivity (for rated power into 8½) 1.3V
THD (20Hz - 20kHz) <0.03%
Bridged Mode
Continuous output power into 8½ * 125W (21dBW)
IHF Dynamic headroom at 8½ +2.5dB
IHF dynamic power (maximum short term power per channel) 8½ 250W
902-
Continuous output power into 8½ * 30W (14.8dBW)
Rated distortion (THD 20Hz - 20kHz) 0.03%
Clipping power (maximum continuous power per channel) 38W
IHF Dynamic headroom at 8½ +2dB
IHF dynamic power (maximum short term power per channel) 8½ 48W (16.8dBW)
4½ 65W (18dBW)
2½ 85W (19.3dBW)
Input impedance 10k½ / 470pF
Input sensitivity (for rated power into 8½) 1V
Frequency response (2Hz - 100kHz) ±0.3dB
Signal/noise ratio ref. rated power 110dB
THD (20Hz - 20kHz) <0.05%
Bridged Mode
Continuous output power into 8½ * 90W 19.5dBW)
IHF Dynamic headroom at 8½ +2dB
IHF dynamic power (maximum short term power per channel) 8½ 140W (21.5dBW)
4½ 170W (22.3dBW)
2100-
Continuous output power into 8½ * 60W (17dBW)
Rated distortion (THD 20Hz - 20kHz) 0.03%
Clipping power (maximum continuous power per channel) 70W
IHF Dynamic headroom at 8½ +6dB
IHF dynamic power (maximum short term power per channel) 8½ 200W (23dBW)
4½ 250W (24dBW)
2½ 330W (25dBW)
Damping factor (ref. 8½, 50Hz) >100
Input impedance 10k½ / 600pF
Input sensitivity (for rated power into 8½) 0.85V
Frequency response 3Hz - 100kHz / +0, -3dBdB
Signal/noise ratio ref. 1W 100dB
ref. rated power 117dB
THD (20Hz - 20kHz) <0.03%
Bridged Mode
Continuous output power into 8½ * 100W (20dBW)
IHF Dynamic headroom at 8½ +7dB
IHF dynamic power (maximum short term power per channel) 8½ 500W (27dBW)
4½ 660W (28dBW)
Elite 92txh-
Continuous Power Output (20 Hz to 20 kHz, 8 Ω, 0.09 %)
Front. . . . .130 W + 130 W (92TXH), 140 W + 140 W (94TXH)
Center . . . . . . . . . . . . . . . . . . 130 W (92TXH), 140 W (94TXH)
Surround . . . . . . . . . . . . . . . . . . . . . . 130 W + 130 W (92TXH)
140 W + 140 W (94TXH)
Surround back . . . . . . . . . . . . . . . . . 130 W + 130 W (92TXH)
140 W + 140 W (94TXH)
Continuous Power Output (1 kHz, 6 Ω, 1.0 %)
Front. . . . .160 W + 160 W (92TXH), 180 W + 180 W (94TXH)
Center . . . . . . . . . . . . . . . . . . 160 W (92TXH), 180 W (94TXH)
Surround . . . . . . . . . . . . . . . . . . . . . . 160 W + 160 W (92TXH)
180 W + 180 W (94TXH)
Surround back . . . . . . . . . . . . . . . . . 160 W + 160 W (92TXH)
180 W + 180 W (94TXH)
Total harmonic distortion. . . . . . . . . . . . . . . . . . . . . . . . 0.05 %
(20 Hz to 20 kHz, 120 W, 8 Ω) (92TXH)
(20 Hz to 20 kHz, 130 W, 8 Ω) (94TXH)
The Adcom PDF won't copy to the board.
Here is a picture of my sweaty nads: