Brown Audio Labs Sp-2b // 6sl7/6sn7 Tube Preamplifier / Silver

Production

2017

Condition

9/10

Restoration

• Full service check
• Cleaned controls, switches, and chassis
• Lowered power supply impedance to improve it's speed

Specs

Type  Tube Preamplifier

Inputs  MM Phono, CD,TV, Tuner,Media/Aux(unbalanced RCA)

Outputs  Two RCA unbalanced

Frequency Response  5 ~ 100,000Hz. @ +/-0.2dB (Line Stage) / 20 ~ 20,000Hz @ +/-0.4dB (Phono Stage)

Input Impedance  100,000 ohms

Output Impedance  350 ohms

S/N Ratio  Greater than 90dB

Tube complement  2 x 6SN7, 2 x 6SL7, 1 x 6080, 1 x 5751 (6 total)

Power Consumption  ~30 Watts

Dimensions  4.25”H X 18”W X 10”D

Weight  17lbs

Documentation

SP-2B Owner's Manual

Stock No.

7497317843165

Liner Notes

Absolute Sound magazine reviewer Dick Olsher, had this to say about the 2B's predecessor, the SP-1B: “After 30 years of audio reviewing, I’m not often surprised, but the SP-1B’s phono input performance definitely did the trick—it put on a show. And it did so to an extent that qualifies as a “wow” moment in my book. In the case of the SP-1B, it destroyed my expectations of what was sonically possible for an affordable preamp. First and lasting impressions were of spectacular dynamics, suave midrange textures, and excellent low-level resolution.”