Guy Picciotto

Guy Picciotto used the Park 100 Watt Master Volume Amplifier Head during the mid to later years of his time with Fugazi, as evidenced by the photo linked.

According to Guitar Geek's rig rundown, Guy uses a Marshall JCM 800.

"Guy: A Park 100 Watt head, A Marshall JCM 800 2203 head, A red Marshall JCM 800 412 cabinet fitted with 75 watt celestion speakers."

"Guy: A Park 100 Watt head, A Marshall JCM 800 2203 head, A red Marshall JCM 800 412 cabinet fitted with 75 watt celestion speakers."

"What guitar equipment do you use live? Sorry about this question but I’m a guitar player so I have to ask…"

"Live I play Rickenbacker guitars through Marshall 100 watt amps. I love Ricks because they are so percussive and sharp in tone. It can sound like a washboard, it can sound like a piercing treble laser or it can just sound Byrdsy and 60’s chiming. It also allows me to cut through Ian’s sound which is much thicker, fuller and heavy. He and Joe function like a wall of rhythm and I kind of slice in and out. In the studio I’ve started using a Fender Twin Reverb. Also every now and then I’ll try an effect box, like an MXR distortion or a wah-wah."