Pass Labs XP-32

There are people who do not know that Wayne Colburn has designed the Pass Labs preamplifier products for the last 20 years.

Wayne’s modesty has tended to keep him out of the spotlight. When we began development of the Xs power amplifier five years ago, we knew that we would also need a companion piece.

Of course, back then we thought we could have this done in a year or so… Wayne was given carte blanche on the design and an unlimited budget, and lots of time to play with many exotic parts and materials.

Naturally the comparison will be made with its predecessor, XP-30 line stage preamp.

The most obvious difference is that the Xs comes in only two chassis, where the XP-30 had at least three chassis, one for supply and control, and one chassis per channel for as many channels as you might reasonably want.

The Xs designed solely for two channel operation, and it fits in two (larger) boxes. The volume controls are improved in performance with 0.5 dB steps, expanded dynamic range and lower noise.

XP-32

The new design uses double shielded low noise toroidal transformers in external supply connected via aviation grade circular connectors using silver over oxygen free copper.

The power supply is dual mono with two transformers with lower radiated and mechanical noise.

Noise is the most prominent part of THD+N at low levels, so by lowering noise we get better resolution and dynamics.

The gain circuitry continues to use our favorite transistors from Toshiba but has a larger, higher biased, output stage like the Xs Preamp, and includes auto bias.

XP-32 omistajan käsikirja ja vapaa sana esivahvistinta koskien

Tekniset tiedot

Tyyppi: Kolmekoteloinen esivahvistin
Otot: 5x XLR/RCA, tape in, pass thru
Lähdöt: 2x XLR/RCA (Slave, Master), tape out
Vahvistus (dB): 9.3 (balansoitu)
Ylikuuluvuus: > 110dB
THD: < 0.001% (1V, 1kHz)
Tehon kulutus: 45 W
Mitat (L x K x S): 482 x 102 x 305 mm
Paino: 26.1 kg

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