
Dale B
Well-known member
Well, I received the OD100 Classic Plus today and this amp sounds freaking HUGE! I like it!
Anyway, if you're not familiar with this amp, it has four EL34's in the power section, six 12ax7's in the preamp and is 100 watts. It has a Plexi-spec Heyboer Output Transformer. There are two channels, with one being clean and the other being dirty. Both channels have gain boosts, yet only the dirt channel's boost is footswitchable. There are bright switches for both the clean and dirty channels. The back panel has a Feedback control and a Density control.
The clean channel sounds really great. It's kind of as advertised in regard to the Custom Audio amps. I can get some nice bounce and chime from it. I can also get it to overdrive if I turn up the gain or hit the boost switch.
The dirty channel sounds like an extremely thick old Marshall. The gain ranges from a good AC/DC type of crunch all the way up to fairly heavy hard rock tone in the realm of Tool. It definitely has more gain than a stock JCM 800. The boost function just kicks up the aggression and adds just a touch more gain, but it isn't a whole lot extra. The main thing the boost function does is add some of the syrupy Plexi fat bottom end. I call it a rubber band type of feel.
As far as the voicing of the dirty channel... Well, you can make it sound just about however you want it to sound. You can dial the Bass back, add some Density and boost the Mids and Treble and you have a tone kind of like the early EVH stuff. You can add more lows and even things out. You can bump the treble and bass down and have more of a mid-heavy tone. Each time I messed with the controls, I was fiddling with the Feedback and Density controls. There are an absolute ton of tones in this amp. I've just got to mess around with it a bit more.
I was kind of hesitant about purchasing this amp because I didn't know how much gain it would have on tap. Well, I'm glad I did purchase it because there is plenty on tap. There is more than I will ever use. My extremely high gain cravings can be met at about 7 on the gain knob of the dirty channel with the boost engaged.
I'm glad I purchased this amp. It fills the void of my old JMP 2203, yet I have a clean channel and a dirty channel that is capable of more gain. I'm happy! If you get a chance to try one of these out, do it. You just might like it! Maybe I will get some clips up here someday.
Well, I hope you guys enjoyed this little initial review. I'm going to play the amp a bit more, but I know it's one that is going to be hard for me to get rid of.
Dale
Anyway, if you're not familiar with this amp, it has four EL34's in the power section, six 12ax7's in the preamp and is 100 watts. It has a Plexi-spec Heyboer Output Transformer. There are two channels, with one being clean and the other being dirty. Both channels have gain boosts, yet only the dirt channel's boost is footswitchable. There are bright switches for both the clean and dirty channels. The back panel has a Feedback control and a Density control.
The clean channel sounds really great. It's kind of as advertised in regard to the Custom Audio amps. I can get some nice bounce and chime from it. I can also get it to overdrive if I turn up the gain or hit the boost switch.
The dirty channel sounds like an extremely thick old Marshall. The gain ranges from a good AC/DC type of crunch all the way up to fairly heavy hard rock tone in the realm of Tool. It definitely has more gain than a stock JCM 800. The boost function just kicks up the aggression and adds just a touch more gain, but it isn't a whole lot extra. The main thing the boost function does is add some of the syrupy Plexi fat bottom end. I call it a rubber band type of feel.
As far as the voicing of the dirty channel... Well, you can make it sound just about however you want it to sound. You can dial the Bass back, add some Density and boost the Mids and Treble and you have a tone kind of like the early EVH stuff. You can add more lows and even things out. You can bump the treble and bass down and have more of a mid-heavy tone. Each time I messed with the controls, I was fiddling with the Feedback and Density controls. There are an absolute ton of tones in this amp. I've just got to mess around with it a bit more.
I was kind of hesitant about purchasing this amp because I didn't know how much gain it would have on tap. Well, I'm glad I did purchase it because there is plenty on tap. There is more than I will ever use. My extremely high gain cravings can be met at about 7 on the gain knob of the dirty channel with the boost engaged.
I'm glad I purchased this amp. It fills the void of my old JMP 2203, yet I have a clean channel and a dirty channel that is capable of more gain. I'm happy! If you get a chance to try one of these out, do it. You just might like it! Maybe I will get some clips up here someday.

Well, I hope you guys enjoyed this little initial review. I'm going to play the amp a bit more, but I know it's one that is going to be hard for me to get rid of.

Dale