Markbass Two Button Footswitch: for the TA501 and TA503 heads, one button on the footswitch controls the mute function (allowing you to tune silently), and the other activates EQ bypass. Also, used with an LMK, gives you an on/off switch for each channel of the amp.
Markbass FOOT SWITCH (code 55141)
Footswitch for TA501 and TA503 Heads
£33.28 (inc vat)