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The Markbass SD800 amp head is perfect for the times when you need speed and clarity at high volumes, especially in big-stage applications. This digital power amp delivers 750W of power into a 4 ohm cab or 450W into an 8 ohm cab. Recommended for use with big cabinets (8X10, 6X10, or 2X15), or two-cabinet rigs, this little solid-state head gives you plenty of headroom and has several options for protecting and shaping your sound, from its VLE (Vintage Loudspeaker Emulator) and VPF (Variable Pre-shape Filter) options to the Pre/Post EQ setting which allows you to choose whether your line out signal is affected by the amp's EQ. The SD800 Head has an input jack that can be used with either active or passive basses as well as dual Neutrik Speakon Combo jacks so you can connect to one or two speaker cabs using 1/4" speaker cables or Speakon cables.

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Markbass SD800 750W Bass Head Features:

Solid state digital power preamp
Delivers 750W of power into a 4 ohm cab, 450W into an 8 ohm cab
1/4" input jack works with active or passive basses
Gain and master knobs
XLR line out
Vintage Loudspeaker Emulator filters out high frequencies
Variable Pre-shape Filter boosts lows (around 35Hz and highs (around 10kHz), and cuts mids at 380Hz
Dual Neutrik Speakon Combo jacks allows it to be connected to one or two speaker cabs using 1/4" speaker cables or Speakon cables
Two balanced XLR output
Pre/Post EQ switch to determine whether signal is affected by EQ settings or not
Ground lift button for eliminating hum from grounding problems
Unbalanced tuner out lets you tune as you play without passing your signal through your pedals
Send Effect and Return Effect means you won't lose signal if something in your effects chain dies while playing
Dual-sided fiberglass PC boards with lined perforations for high-quality solder connections
Surface-mount components are silicon-sealed to isolate vibrations
Computer-grade pre-assembled ribbon connector cable harnesses and ribbons for noise-free operation
Integrated threaded posts for easy assembly/disassembly and added durability
Rigid 2mm thick aluminium chassis for a long-lasting finish

Markbass SD800 750W Bass Head Specifications:

Power
Input impedance: 500Kohm, max. voltage: 9 Vpp
Effect return impedance: 33Kohm, max. voltage: 12 Vpp
Output Power: 450W RMS at 8 ohms, 750W RMS at 4 ohms
Voltage is factory preset for the U.S.

Controls
GAIN: —80dB to +25dB range
LINE OUT: level control on front panel
PRE/POST EQ (for line out): switch on rear panel
GROUND LIFT: switch on rear panel
MASTER VOLUME

Equalization
LOW
Center frequency: 40 Hz; level ±16dB
LOW-MID
Semi-parametric: frequency 100—800 Hz, level ±16dB
HIGH-MID
Semi-parametric: frequency 700 Hz—6 kHz, level ±16dB
HIGH
10kHz shelf; level ±16dB
VPF (Variable Pre-shape Filter)
Center frequency: 380Hz (cut)
VLE (Vintage Loudspeaker Emulator)
250Hz — 20kHz cut

Outputs
EFFECT SEND
Unbalanced, max. voltage 12 Vpp (pre-EQ)
TUNER OUT
Unbalanced, max. voltage 2 Vpp
LINE OUT
Balanced XLR, max. voltage 25 Vpp
SPEAKER OUT
Speakon, 1/4"

Other
Dimensions: 14.5"(W) x 3.39"(H) x 11.9"(D)
2U tall
19"(W) with rack ears
Weight: 7.5lbs.