RTO version Demo - by Barry by GuitarPCB.com published on 2013-03-29T16:10:08Z This is the RTO version of the LDO/RTO circuit board from GuitarPCB. Les Paul into clean Fender Twin Amp. This circuit version is designed to emulate a more Trowerish tone. Comment by GuitarPCB.com Gain at 2:00 throughout with minor changes using the Guitar Volume. 2013-03-29T16:11:56Z Comment by GuitarPCB.com Tone control set at center 12:00 throughout. 2013-03-29T16:11:21Z Comment by GuitarPCB.com This is the RTO version of the LDO/RTO circuit board from GuitarPCB. 2013-03-29T16:10:46Z