Having revived the Electrodyne brand in 500 Series form in 2009 (with the 501 discrete two-stage studio preamp and 511 two-band inductor EQ), Electrodyne and Pete’s Place Audio have released dual mono-channel, 19-inch rack-mounted versions of both products.

Like the Electrodyne 501, the 2501 is a two-stage, discrete transistor, transformer-coupled preamp with active DI. Based primarily on the modules found in the 1608 console, each amp stage is optimised using detailed Electrodyne factory engineering notes and components identical to the originals. In fact, the 2501’s transformers are made by Electrodyne’s original supplier.

The preamp's active DI circuit presents an extremely high load (>6MΩ) to musical instrument outputs, while the output of the DI circuit is designed to directly connect and interact with the mic input transformer

The faceplate of the Electrodyne 2501 features two sets of dual large rotary gain controls offering up to 68dB of gain – adjustable over 50dB in 2dB steps with two ranges via a 20dB pad switch – and two smaller output level pots infinitely adjustable from 0 (off) to +6dB over unity. Additional switches for impedance selection (50Ω or 200Ω), phase reverse, +48V phantom power and DI (with quarter-inch input jack) are also present. Aclip LED on each channel that monitors all three amp stages and illuminates when any stage is 3dB from clipping.

The Electrodyne 2501 preamp carries a price of US$2,095.50.

See also:
Electrodyne 2511 

More: www.petesplaceaudio.com