Made in the UK, the Marshall JCM2000 DSL100 is a 100-watt all-valve guitar amplifier head from the original JCM2000 series. It features two footswitchable channels – Classic Gain and Ultra Gain – with Clean/Crunch and Lead 1/Lead 2 modes respectively. Controls include three-band EQ, Presence, Deep and Tone Shift functions, along with independent reverb controls and an effects loop. The valve complement consists of four ECC83/12AX7 preamp valves and four EL34 power valves.