I have a vintage SWR "Black Beauty" bass guitar amp for sale. The combo amp is in excellent cosmetic condition and works perfectly. Along with SUNN and Gretsch, this is also manufactured by Fender Musical Instruments Corporation, U.S.A. This combo amp retailed in 2003 for $1749.99.
Here's some info from the manufacturer:
SWR's Black Beauty combo amp features a custom SWR 15-inch bass driver and high-frequency horn tweeter in a 4-ohm speaker configuration - driven by 350 watts RMS (450 watts using a 4-ohm extension speaker cabinet). In addition to dramatic, new chassis graphics (featuring the SWR badge in classic chrome), the Black Beauty has inherited a very popular effect from the SWR Mo' Bass soundstation - the SWR SubWave - producing clean, pure and accurate octave signals.
The Black Beauty's 12AX7 preamp tube provides true warmth and grit through the 20Hz - 40kHz frequency response. And with 350 watts at 4 Ohms this amp thumps out 100dB SPL! Increase your power to 400 watts at 2.67 Ohms (with 8 ohm extension speaker) or 450 Watts at 2 Ohms (with 4 ohm extension speaker). A third order, 6db rolloff, 18db Butterworth high pass 4KHz turnover crossover is located inside the Black Beauty's speaker enclosure.
SWR Black Beauty Features:
Dual independent input jacks compatible for both active and passive instruments
Gain control with LED peak clipping indicator
Exclusive Aural Enhancer circuitry
SubWave (with Level control and illuminated on/off switch)
Limiter with defeat switch
Active bass and treble controls
Variable mid-range EQ
Effects Blend Control
Master Volume Control
Power On/Off Switch
Sidechain effects loop
Balanced XLR output with mode switch (Direct, Line, or Direct + Sub)
Tuner send
Extension speaker output
Three-way tweeter control switch (full-range, -6dB, tweeter off).
Extruded heat sink