Marshall ST20H [STUDIO JTM] (Amplifier Head Marshall) ISO ACOUSTICS there is a "140" mark

there is a "140" mark on the right side of the table

The microphone's rear response is damped

●Maximum SPL for 1%/3% THD: 140/145 dB

The center PU is a Bill Lawrence L-250

Marshall ST20H [STUDIO JTM] (Amplifier Head Marshall) ISO ACOUSTICS there is a "140" mark[Huge outlet sale!] Outlet item with manufacturer's warranty! This is a super bargain, only one unit available!! Marshall's first JTM amplifier produced a legendary sound that has inspired musicians across generations. In tribute to that legacy, the ST20H revives the iconic '60s tone that made Marshall famous, in a more compact size for the modern era. The ST20H features built in power reduction technology with switchable 20W and 5W settings,