The Markbass TA503 has a premium tube preamp that gives this bass amp head the advantage of tube warmth and analog clarity simultaneously. The TA503 bass head boasts a flexible EQ with 4-band semi-par... Click To Read More About This Product
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The Markbass TA503 has a premium tube preamp that gives this bass amp head the advantage of tube warmth and analog clarity simultaneously. The TA503 bass head boasts a flexible EQ with 4-band semi-parametric tone control and Markbass' signature VLE (Vintage Loudspeaker Emulator) and VPF (Variable Pre-shape Filter) filters.
Markbass gave the TA503 bass amplifier a Pre EQ/Post EQ switch to determine whether the output signal is affected by the EQ settings or not, as well as Send and Return Effect I/O to insure your main signal continues even if something along your effect chain breaks or runs out of batteries. An optional footswitch provides mute-to-tune and EQ bypass control.
Tube preamp analog 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
Line out volume control knob
EQ includes controls for Low, Mid Frequency Low, High Frequency Low, and High
Mid Frequency High and Low level controls for deciding how much frequency area will be affected
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
Pre EQ/Post EQ switch to determine whether the output signal is effected by the EQ settings or not
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
Power Passive Input impedance: 500Kohm, max. voltage: 4 Vpp Effect return impedance: 500Kohm, max. voltage: 10 Vpp Active Input impedance: 500Kohm, max. voltage: 10 Vpp Output Power: 300W RMS at 8 ohms, 500W RMS at 4 ohms Voltage is factory preset for the U.S.
Controls GAIN: ”80dB to +35dB 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 FOOTSWITCH: Mute, EQ bypass
Equalization LOW Center frequency: 40-300Hz; level ±16dB LOW-MID Semi-parametric: frequency 100”800Hz, level ±16dB HIGH-MID Semi-parametric: frequency 700Hz ” 6kHz, level ±16dB HIGH Semi-parametric: 1.5-10kHz 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 20 Vpp (pre-EQ) TUNER OUT Unbalanced, max. voltage 2 Vpp LINE OUT Balanced XLR, max. voltage 15 Vpp SPEAKER OUT Speakon, 1/4"
Other Dimensions: 14.5"(W) x 3.39"(H) x 11.89"(D) 2U tall 19"(W) with rack ears Weight: 8.6lbs. Tubes: 1 x EECC81, 1 x ECC83 (JJ Electronic)