This is a modded YSR-1 in which a classic amp was made even better! Outfitted with EL34 this tone machine has been given expanded tone capabilities with the addition of a mids control (giving it a 3-band EQ section), a presence control and a Master volume (so that you can get those cranked up EL34 tones at usable levels).
It shows its age through signs of love and use (see pics). The logo plate is missing and there are some tears in the tolex. But this amp works great and with the help from the mods make it a truly versatile beast for stage and studio. It will be packed up securely and ship out to you the next day.