Thanks George. Since you recommended the burson-100, did you have any thoughts on the burson ab-160? The specs look as you suggest:
http://www.partsconnexion.com/burson/ab-160.html
Input impedance: 500 KOhms
Frequency response: 1Hz (-0.3dB) to 35 kHz (-1dB)
Signal to noise ratio: >120dB at 0dB gain
Output impedance: line out 15 Ohms @ line level
Power dissipation: >10W, internal, regulated power supply
Maximum Output Voltage :12VRMS
Maximum Input Voltage: 6VRMS
http://www.partsconnexion.com/burson/ab-160.html
Input impedance: 500 KOhms
Frequency response: 1Hz (-0.3dB) to 35 kHz (-1dB)
Signal to noise ratio: >120dB at 0dB gain
Output impedance: line out 15 Ohms @ line level
Power dissipation: >10W, internal, regulated power supply
Maximum Output Voltage :12VRMS
Maximum Input Voltage: 6VRMS