Surprisingly powerful yet tiny amp head.

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The F1 is Markbass' lightest and smallest bass amp head to date. At 500W the F1 bass amp boasts an unbelievable power-to-weight ratio of more than 100W per pound. Its digital power amp gives the Markbass F1 bass amp head super-fast response and a crisp, clear, full sound that will convey every detail of your playing, instantly.

The F1 amp head's 1/4" input jack works with both active and passive basses and allows you to EQ your sound with Low, Mid Low, High Low, and High control knobs, as well as Markbass' exclusive VLE (Vintage Loudspeaker Emulator) and VPF (Variable Pre-shape Filter) filters, with separate Gain and Master volume controls.

The rear panel has a balanced XLR out, Neutrik Speakon Combo jacks which work with either Speakon or 1/4" speaker cables, a tuner out, as well as Effect Send and Return 1/4" jacks to ensure you don't lose your main signal if a piece of your effects chain dies. There is also a ground lift switch to help eliminate hum. Despite being lightweight, the Markbass F1 bass amp head is made with a rigid 2mm thick aluminum chassis to ensure your investment can handle the rigors of the road.

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Markbass F1 500W Bass Amp Head Features:

Digital amp bass head
Provides 300W RMS at 8 ohms, 500W RMS at 4 ohms
1/4" input jack works with active or passive basses
Gain and Master volume controls
Clip warning light
EQ includes controls for Low, Mid Frequency Low, High Frequency Low, and High
VLE (Vintage Loudspeaker Emulator) and VPF (Variable Pre-shape Filter) filters
Neutrik Speakon Combo out jacks for use with 1/4" or Speakon speaker cables
Balanced XLR out
Ground lift switch to eliminate hum
Tuner out sends unbalanced signal sent to a tuner, amp or recording equipment not needing a balanced signal
Send and Return Effect ensures main signal continues even if something dies in your effects chain
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 durability on the road

Markbass F1 500W Bass Amp Head Specifications:

Power
Input impedance: 500Kohm, max. voltage: 15 Vpp
Effect Return impedance: 33Kohm, max. voltage: 25 Vpp
Output Power: 300W RMS at 8 ohm, 500W RMS at 4 ohm
Voltage is factory preset for the U.S.

Controls
GAIN: —80dB to +25dB range
GROUND LIFT: Switch on rear panel
MASTER VOLUME

Equalization
LOW
Center frequency: 40Hz; level ±16dB
LOW MID
Center frequency 360Hz, level ±16dB
HIGH MID
Center frequency 800Hz, level ±16dB
HIGH
10kHz shelf; level ±16dB
VPF (Variable Pre-shape Filter)
center frequency 380Hz (cut)
VLE (Vintage Loudspeaker Emulator)
frequency range 250Hz—20 kHz (cut)

Outputs
EFFECT SEND
Unbalanced, max. voltage 20 Vpp (pre-EQ)
TUNER OUT
Unbalanced, max. voltage 25 Vpp
LINE OUT
Balanced XLR, max. voltage 10 Vpp
SPEAKER OUT
Speakon, 1/4" x 2

Other
Dimensions: 10.87"(W) x 1.73"(H) or (1U) x 10.04"(D)
Weight: 4.63 lbs.