Lamm LL2 w/ Pass labs

06-30-08: Pubul57
A valid concern, I was not aware that the LL2 had such a wide swing in output impedance in the highs.

Actually, it's the lows...20Hz (not 20Khz). Hence, the concerns about bass roll-off.

ok..what about the LL2 with a Mac 402

The MC402 has even lower input impedance than the Pass Labs with specs of 10,000 ohms (unbalanced) and 20,000 ohms (balanced), so I would think if the LL2 Deluxe has potential impedance matching issues with Pass Labs, then it would have more significant issues matching with the MC402.

ok...lets try this..what tube preamp in the under 5 grand used market works well with pass..thanks

Atma-Sphere MP-3. Retail for linestage $4550. Retail with phono option. $5150. The MP-1 works very nicely with Pass Labs, so I suspect the MP-3 would as well.

Audio Horizons TP2.1. It has an output impedance of less than 180 ohms. It has a starting retail price of $2095 and increases with options.

Modwright LS 36.5 has an output impedance of 110 ohms. Retails for $4995.

All are conceivably ideal matches for the Pass Labs.

I have heard neither the Audio Horizons TP2.1 nor Modwright LS 36.5 with Pass Labs, so I cannot make a recommendation. I'm only mentioning them as possibilities because of their low output impedance specs.