Dive into the legacy of Julius Futterman, the inventor of the legendary OTL (Output Transformer-Less) tube amplifier topology, brought to commercial life by New York Audio Labs (NYAL). The OTL‑2B is a rarer, lower-powered (10wpc) sibling in that iconic lineage—an electrifying slice of hi-fi history. The OTL‑2B is far rarer than the flagship OTL‑1, with Japanese-market variants offering about 10 watts—delicate but captivating in smaller systems.

Fast, airy dynamics with a wide bandwidth (up to 250 kHz in some models), delivering crisp attack and bloom .
Low impedance coupling means excellent control over reactive or challenging speakers—electrostats, ribbons, oddball vintage cabs welcomed
Natural tonality: smooth mids, detailed highs, and no transformer coloration—just pure, direct tube sound.

This piece has a few small nicks and scratches, but is remarkably clean.

S/N: 84050225

Replaced two missing 6LU8 tubes
Replaced electrolytic capacitors on main board
Replaced missing relay
Replaced degraded filter media
Verified bias settings
Tested for power and distortion at 1kHz:
Right Channel- 10.1 Watts RMS into 8 ohms @0.393% THD+N
Left Channel- 10.4 Watts RMS into 8 ohms @0.515% THD+N

New York Audio Labs

NYAL Julius Futterman OTL-3 // Vintage / Tube Amplifier Monoblocks

NYAL Julius Futterman OTL-2B // Vintage / Stereo Tube Amplifier / Restored and Super Rare

NYAL Futterman NCP-II // Vintage / Stereo Tube preamplifier / Ultra Rare