I have a Robertson 4010 awaiting hookup. Years ago I read Peter Moncrieff's review of it in IAR. He praised it as one of the best sounding amps. I remembered this and when a 4010 appeared on EBay for a reasonable price I bought It! Looks in very good condition! I am wondering how it will sound when connected to my DCM TW1A's? They are presently driven by a Son of Ampzilla/Thoebe preamp. This pairing sounds quite outstanding, so I am a bit reluctant to change it. The 4010 would have a formidable contender in the Son! If I make the change the preamp I would use will be the PS Audio 4 - an excellent sounding unit whose sonic qualities I am familiar with. I will report back if and when I test the 4010.
