Anyone have a schematic for a Coda Model 11 amp?

I know this is a long shot, but I just picked up a Coda Model 11 amp and was thinking of doing a little work on it to bring it up to date. If anyone has a schematic for this amp I'd appreciate it.

contact Coda Doug Dale
Thanks Tobb. As you can see, I got no replies, so I did contact Doug Dale at Coda. He wouldn't give me schematics, but I did send the amp in to him for service.

Do you still have the amp? What preamp do you use with it? I have a model 10 that, sadly, isn't used at the moment. I've been pondering as to what preamp I should match with it. Any suggestions based on your experience?


Let me first say that I bought the Model 11 as part of a system downsizing and yes, I am still using it. From previous experience with Coda amps in the 90's, when I downsized and went back to SS, Coda was high on my list. I owned a Model 10 and 20 in the 90's, as well as their 02b and 01p preamps.

I currently am using a VAC Auricle preamp which I like quite a bit. I found that I could go back to a SS amp, but NOT a SS preamp. However, I also just ordered a Cary SLP-98P F1 that I expect to receive next week sometime. I'm hoping the Cary will give me a bit more of the tube magic than the VAC does. The VAC is very nice, and I would prefer the VAC over the Cary with a tube amp. However, with a SS amp, I'm looking for a wee bit more tube bloom, hence the Cary.

I have a friend who is using a PrimaLuna tube preamp with his Coda Model 10.5 and he is very happy with that combo. His Audiogon moniker is: Wescoman in case you wish to contact him. His name is Steve.

What is you price range for preamp shopping?
My price range is $1K ball park, preferably used. I would be using it with my Aerial Acoustic Model 7 speakers. My source is an Oppo 980H. My cables are mostly Blue Jeans. I'm currently using a NAD 375 integrated.

My observations are that several preamps are available in the $500-$700 range but I'm not convinced they would be an improvement over what I currently have with the NAD 375.

Another option I've thought about is a DAC/preamp combination. The Monarchy Audio NM24 is probably at the top of this list largely because of the cost/performance ratio of Monarchy products.

I'm not in any rush, I just don't want to part with the amp.
It sounds like you are looking for a solid state preamp. Keep a lookout, I'm sure you can find an older Coda, Classe, Forte or other such device for under $1000.

I tried going back to all solid state, but it didn't work out for me. Perhaps if you've never heard tubes, just stick with solid state, you're better off. Tubes will spoil you forever.
JC I would have agreed with you before going with a Coda 15.0 and a CP preamp.
We were running an Ayon Triton in tubes prior to
But then that got blown out of the water with Coda's new 7X.
They use some very expensive double gated FETs and because of their high impedance they are very tube like.
I thought I would go with some tubes in the Pre until I heard
the 7X.
I've switched from tubed preamps to solid state several times. The last time from an ARC Ref 3 to a CODA CP with never a regret or note missed. There are things I do miss from the ARC but equally I'd miss little things the CODA does if I switched back. Overall the two sound more similar than different, witch seems to be the way both have evolved. The problem with the REF 3 is the tubes. In my view the preamp could sound much different from session to session from amazing to what's up with this thing. It did not matter how new the tubes were or whether I purchased the tubes from ARC or not. With the Coda CP it is always consistently great and one never has to worry about long interconnects or impedance mismatches. I plan to upgrade to the forthcoming two chassis 7X . If money grew on trees I'd be trading my Coda CSX amps in for the new 15s.
Well I'm not playing in the same financial ballpark as you Sgr or Tobb. My Coda Model 11 amp is 20 years old this year. :)

Maybe in 2023 I'll give that Coda 7X a listen. ;)
JM nothing shy about the 11.0 and the life of your unit is a testament to it.
You are aware Coda will offer I believe 50% of the original purchase price for an upgrade.
Having said that I would put my money in the 7X and keep the 11.0
Yes, Tobb, I am well aware of Coda's trade-in policy. I spoke with Doug about this when my 11.0 was in being serviced. They had some NOS 10.5's that they were selling and I could have traded the 11.0 in for a new 10.5. Doug advised me to hold on to the 11.0, and I agreed. Nothing like pure Class A power.

If the 7X sells for < $2K with phono stage, maybe I'll give it an audition.
I won't be upgrading amps anytime soon. Not unless I win some money. May the lord smite me with that misfortune. :-) The CSXs sound great as does my CP preamp. I will be auditioning the 07x at some point but it has to just wallop the CP. The 07x does not include a phonostage. :-(.
I see the 07X lists for $6500 too, so without phono, and unlikely to be under $2K, I don't see me trying one out for another 8-10 years.
Sgr it decimates the CP which I thought was awesome until the
I was contemplating introducing tubes to my system more than likely at the DAC not now with the 7X.
I will be auditioning the 07x with the separate power supply as soon as it is available. Can't wait.
Yes it is on my radar screen but no idea when it will be available though.
You can bet it won't be 6500 lol
02-12-13: Tobb
I was contemplating introducing tubes to my system more than likely at the DAC not now with the 7X. I see why you were saying the 7X blows away tube gear, you haven't heard tube gear. I'm not saying that the 7X is not a great preamp, I have owned many, many high end preamps, both solid state and tube. Names like Krell, Coda, Levinson, Classe, Klyne, Tom Evans, VAC, BAT, ARC, Cary, CJ and many more that I'm sure I've overlooked.

Of all the SS, the Klyne came the closest to a tube sound, but even then it did not flesh out vocals and instruments like a tube preamp. If you haven't experimented with tubes, don't, they become addictive, and then you're stuck fiddling with tube experimentation.

Stay with SS and you will be just as happy as I am with tubes. Once you go to tubes, it's very hard to go back to SS.
lol you jest JM!
How much better does it get than Ayon or Einstein in tubes?
LOL Tobb!! That's like asking how much better SS gets beyond Karan Acoustics or Symphonic Line.
JM you missed the point completely!
I've been to to tubes and back without any preconceived ideas.
What did you pay for the Klyne and when?
02-14-13: Tobb
What did you pay for the Klyne and when?

Let's I recall, I'd say that I bought a 7LX3.5P about 5-6 years ago for about $4K used. Real nice preamp, you won't find many Klyne's come up on the used market.
I see a Coda 7X preamp for sale, in case you are interested.
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Dear inferior loser jmcgrogan2 ... You are like a baby in audio. You think you are good, but in real you are an inferior born loser in audio ... Have fun with your loser system and keep on dreaming ..
Bo, it's unfortunate that you can't treat others with respect here, and that you respond to a thread such as this with insulst while contributing nothing to the topic.

Fortunately, this group has moderators.

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" it's unfortunate that you can't treat others with respect here, and that you respond to a thread such as this with insulst"

It's unfortunate that you can't spell, cleeds! What we have here, which is very clear for all to see, is that when some esteemed contributors to this fine cite speak the truth, they are met with derision and censorship. Yes it is true that truth is something that many "audiophiles" with their twiddly-fiddley hi-fi music reproduction systems simply cannot accept, especially when  posted by a trailblazer, visionary and frankly audio genius  such as bo1972. Great minds have always faced great opposition, as any student of history knows. Perhaps, cleeds, when you finish your education, you will have the maturity and sense to sit silent in the face of such overwhelming knowledge and wisdom. Or perhaps you will never complete your education, due to a mental deficiency, laziness or perhaps you are really incarcerated and have nothing better to do. Maybe you are a drug addict.

cleeds, kindly allow me to be succinct, brief and clear: leave bo alone. This is not your cite. I can find out who you are through your user information and that won't work out well for you. Have a lovely day doing whatever it is you do, other than being here. No one here needs you.
Amazing, clearthink has been here less than a week and he is setting the ground rules for this site. When you criticize someone for their spelling, you should make sure your spelling is correct. The word is site, not cite, you genius. Maybe you should finish your education as you recommended for cleeds. The onus is on Bo to prove his claims to the people of this SITE. Throwing out a bunch of his own made up buzz words and claiming total victory over all in the world will be met with extreme skepticism, as it should be. The more aggressive Bo gets with his grand standing, the more backlash he will get. If he, or you, can't take it, LEAVE. I am more than willing to give Tru-Fi a listen, but I am not travelling to the Netherlands to do so. Bring it to the US and prove what you say is true (for Bo, proof is what you have, prove is what you do). The problem is that there has been several years of proclaiming how great he is, and he has not proven it to anyone here. Having a brand new poster come here and antagonize long time members of this site is not helping his cause. Words, particularly of the person making the outrageous claims, are not proof of anything. I don't know why that is so hard for Bo to understand that really simple fact. People here are tired of having their threads completely derailed by his self promotion. Quit talking about proving it in the states, and come here and do it. Until then, expect to receive more of the same.
" Amazing, clearthink has been here less than a week and he is setting the ground rules for this site"

Again with the indulgence of this SITE'S esteemed moderators and thoughtful contributors I must note that some who write here suffer from mental retardation or emotional disturbance because of the inability to accept the TRUTH that has been proven to others who are willing to listen. Although this is not an uncommon matter as anyone with an education knows it seems to be an especial problem here with audiophiles who pretend to "know" that which they do not "know" as is obvious.

csmgolf you can tell me to "quit talking" but truth has a funny way of not being silenced it will emerge eventually. Long ago societies shot the messenger and that seems to be what you are trying to do here as you also pretend to speak for others while I only speak for myself.

if you are retarded I feel sorry for you but if you are just stupid then I must ask: what are you doing here? Let those who have proven their science, knowledge and demostarted competence have the floor while you sit and soak it in, soak it up and MAYBE learn a thing or 10!!!!! There are many expert knowledgeable and scientific voices here who actually understand music reproduction systems. The moderators endorsement of my contributions must be noted and so think about that, mister.

Great minds have always met great opposition all through history as anyone with an education learned by 4th grade maybe even 1st grade!
Reading comprehension is obviously pretty difficult for you. I never said quit talking. I said quit talking about proving what you can do and actually come over here to the states and show us. Prove it! Talk is cheap. If it weren't Bo would be broke. I am willing to go listen to one of these awe inspiring systems and have it proven to me. Please do tell me, where in the United States can I go to hear this revelation so that I may be enlightened. Clearly you couldn't comprehend that I asked the same thing in my last post. And at the rate your posts are being deleted, I believe the moderators are neither enamored with or indulging you. I have read a great many of Bo's ramblings over the years and many of the member's replies to them. All of those replies to the thousands of posts are right here in the archives. If you have a couple of months with nothing else to do, you could try reading them. What you would find is that literally no one buys into his hype. There has only been one that has vehemently attacked members for their opinions against Bo, and that is you. Outrageous claims were made in the day by both Christopher Columbus and P.T. Barnum. It has yet to be proven here in the states which one Bo is. Let me state it one more time, I am willing to listen and learn, but bring it over here where we can have the opportunity to listen (p.s. I am typing this very slowly in the hopes it will help you understand).