This once entry level amplifier has gradually gained legit professional grade usage. Their combination of sound and portability is such that they serve as main studio amps, all the way to being mic'ed up in front of stadiums. This one has held up well, with just a couple of small rips in the tolex, and only moderate signs of previous wear. The changed Warehouse speaker sounds great, and makes for a great alternative to the original. The power cord, power switch, and electrolytic caps have been changed, along with a couple power resistors and 2 trem parts. Otherwise the circuit is all original, which in combination with the original iron makes for a fabulous sounding amplifier!