straight from the Carvin Site on the BR510N (the exact same as when I bought mine in February 2009, the month tey were released):
- RMS 8 Ohms: 300w, RMS 4 Ohms: 500w, RMS 2 Ohms: limited
- 8 ohms Dynamic Peak: 600w
- 4 ohms Dynamic Peak: 1000w
- Output Mode: High Efficiency CLASS D technology
- Power Supply: High Efficiency High Frequency switching
- Frequency Response: +/- 0.5 dB 20 Hz - 20 kHz, +/- 1.5 dB 10Hz - 40 kHz
- THD: 0.1% @ 50% output
- 1% 20-20 kHz @ 90% output
- Damping Factor: >300
- Preamps: Three CLASS A
- Passive/Active Input: 10 dB gain switch - accommodates all basses
- Preamp Tube: 12AX7 switchable in/out
- Bass/Treble: +-10 dB at 100 Hz and +-12 dB at 8k Hz
- Contour control: Flat to -126 dB at 400 600 Hz
- 1 Mid Parametric: +- 10 Db sweepable 100 to 800 Hz
- 2 Mid Parametric: +- 10 Db sweepable 800 to 3k Hz
- Graphic Equalizer: 9 band +- 10 Db @ 63, 120,250,500,1k,2k,4k,8k,16k
- Compressor/Limiter: up to 30 dB - convenient one knob control
- Direct Out: - 50 to +4 dBV adjustable, Balanced 600 ohms
- Effects Loop: -10 dBV In/Out buffered at 10k to keep source constant
- FS22 Footswitch: Graphic EQ on/off, Direct Out MUTE on/off
- Soft Start: gradually turns the amp on to prevent surges
- Speaker Protection: protection circuit immediately disconnects your speakers
- Over-Current: protected, Under-Voltage protected, Thermal protected
- AC Voltage Input: 100-250V 50-60 Hz
- Rack Space: 2U adapter end-plates
- Dimensions: 23.8" high, 18.5" deep, 20.7" wide
- Net Weight: 48 lbs
- Made in San Diego, CA
I have since sold mine for lack of ability to find that 'tone' I was looking for.
These are really great amp heads for pushing a clean tone hard, but the cab whined a bit under louder playing instances.
*RMS 2 Ohms: limited = 500watts