Opinion:PSaudio/Robertson audio pre/amp

The PS Audio and Robertson were bot good units in their day. However, I am willing to bet that the current retail on both units is significantly less than $800 in the Orion Blue Book (which will also tell you the wholesale price your dealer paid for the units). If you like PS Audio, you should be able to pick up a used 5.5 (a much better pre-amp) for about $300. Also, if you check out some auctions, I'm sure you can find a much better and more recent amp for $500 or less. Needless to say, it doesn't sound like much of a "deal" to me.

Do you want to try Transcendent Sound's Grounded Grid?
(www.transcendentsound.com direct.)

Hi,

to find today a unit new which sounds as good or better than the 4010 will cost you approx. $4,000. So IMHO, even though the blubook value is probably less than 800, this amp. in good condition is so rare that you should not hesitate and buy it asap (if is is in good condition).

Take care

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.