Give the Mystere "ca11" a try. I bought one - small form factor for $1795. Push-pull design employing 6sn7 tubes.
ca11 Specifications
Freq. Response: 8Hz-200kHz @ 47k Ohms
Distortion: 0.05% @ 100mV, 0.12% @ 1V
Noise: -104dB A-weighted
Gain: 19dB
Input Impedance: 150k Ohms
Output Impedance: 592 Ohms
Dimensions: 12.6" x 7.8 " x 15.2" (WxHxD)
Weight: 33 lbs
Inputs: 4 pair RCA
Outputs: 1 pair RCA
Tube Compliment: 4 - 6SN7 & 1 - 5AR4
ca11 Specifications
Freq. Response: 8Hz-200kHz @ 47k Ohms
Distortion: 0.05% @ 100mV, 0.12% @ 1V
Noise: -104dB A-weighted
Gain: 19dB
Input Impedance: 150k Ohms
Output Impedance: 592 Ohms
Dimensions: 12.6" x 7.8 " x 15.2" (WxHxD)
Weight: 33 lbs
Inputs: 4 pair RCA
Outputs: 1 pair RCA
Tube Compliment: 4 - 6SN7 & 1 - 5AR4