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I'm super intrigued by what a IIc non-plus sounds like. I have a late IIb DRGX (RP9C board) and a IIC+ DRX. I love both. If the IIc takes what I love about both and combines them, I may have a task ahead of myself..

And if so, how long ago did you, and are you satisfied? My IIc+ is a DRX (non-graphic), and I actually find myself playing mostly without "pull deep" engaged. My aim in the most singing, vocal, harmonically-rich lead tone. I'm not in it for the tight rhythm crunch (I actually have a late IIb...

Hello, I'm wondering if there is info about exactly what serial numbers encompass these preamp boards: RP9A / SP9A RP9C / SP9C ...and any others, for the sake of having it all in one place. I know my serial #1015X has the RP9C I had a #8936 that had the SP9A

Wondering if anyone has tried them & liked them in Simul Mark II's. Also wondering if they should stay in the bias range for what Mike B recommends for EL34's in the class A sockets (25-35 mA, I believe), and where to buy/how to ask for tubes that will get me in that range.

Looking to just put them in the class a/b sockets, not in the class a (simul-class) sockets. :?:

I'm curious to get more information on these two preamp circuits: how they are similar, and where they differ. I'm moving this from another thread I started: I re-aquired the Mark IIb DRGX that I sold last summer. It has the RP9C preamp board. n.b. - I stopped playing guitar for 17-ish years...

EDIT: I've found I actually don't need to use a pedal to achieve what I wanted. There is an update to all of this in the thread I linked below. I'm wondering if anyone has a go-to pedal they put in their IIb (or in front; whatever works better) to just slightly push the IIb's lead sound into...

Accidently posted this in the wrong forum, just reposted here... I have heard some say that non-reverb versions sound the most organic, and I know that I prefer the non-EQ versions. I also know I prefer simul-class. Are there many out there that fit this description? I've never seen one. I...

Talk me out of it before I do it! It requires an output transformer from another simul (Mark III or earlier, before Mark III's went to pentode, I think?) Anyways, the correct transformer is on hand, and it is on Mike B's bench. Should I do it? I love my DRX for the sweet, liquidy lead...

I know this topic has been discussed, but consider my situation: I have my “grail” amp (iic+ DRX), and even a “backup” (HR), but might want something to keep at my office/studio that isn't so irreplaceable. The sound I go for is a mix between Petrucci’s lead tone and sort of...

I just got my IIb S "Super Sixty" back from Boogie (SN 88XX), with a loop mod & service. I hate to say it- I'm quite a bit disappointed. It really does not sound anything like either of my IIc+'s. The two biggest differences are a nasally-mid honk that I can't dial out (even with EQ in the...

My IIC+ DRX is my favorite amp ever. It is notable that I keep the presence knob perpetually parked at "0" Does the mod change the character/frequency response of the presence knob? Or does it just make the amp less bright, so I will turn the presence to 2.5 (like my IIC+ HR) and get the same...

It came from Europe, in nothing but a flight case with the shipping label taped on. Here's what I found when I opened it: Please send me positive vibes so that UPS will sponsor a brand new cabinet from Boogie! And then there was the export voltage switch, which, for whatever reason, had...

I just got ahold of a IIc+ HR with the 100 PT. After comparing the lead tones to a Mark III red stripe DRG, a IIb S, a IIb DRGX, and a Studio Preamp (through all of the above power amps), I am blown away. I have never played an amp that sings like this, and that can have so much variation in...

I hadn't used the StudPre in a couple of days (IIC+ arrived! 8) ), so I was puzzled when I was plugging it in, and it was needing the master to be pushed past 3-4 on the Mark II power amp, only to hair a faint, fizzy sound. I opened it up, and here's what I found - (I think the reverb is...

Not trying to start an argument; would actually just prefer if some would offer insight purely from a standpoint of understanding circuits/electronics. I understand that the onboard EQ is on 40v rails (whatever that means), as opposed to a 9v pedal- is that correct? Therefore, the pedal is...

It has a "Simul-class/Class A" switch on the back The original owner gave me the original paperwork, but the order states "Hundred Watt Option with 100/60 Watt Switch and Fan" However, the order doesn't mention anything about the export PT that it has, so I don't know what to think. When I...

Just curious, if you only have one pair of your best tubes, would you put them in the Class A or A/B sockets? My favorite are my STR 415's, but at the moment, I just have 1 pair. I have four STR 430's, and two STR 440's Just curious how people perceive the sounds of particular tubes in Class...

...in layman's terms ;-) ...or, it guitar-player-ism's Being honest, the Studio Preamp through the power section of my Mark IIb S (60W) is the most incredible lead tone I've ever experience in-person in my life. I'm thrilled. However, recordings I've heard of the IIC+ have always been my...

Just curious about the second-hand market for mod'd iib's. Mod I'm wanting to do is the fx loop Also, are these possible? Pentode/Triod switch "++" Mod If "++" is possible, can it be made switchable? (via push/pull) It's only the fx loop mod that I really want, just considering the others...