Yes, the OPTX are a pair of James 6123HS.
They were all I had when I built the amp.
I'm glad I put them to work on the RH84.
As you say it really sings with these transformers.
Steve
Let me explain by what I mean to see a good small amp. I'm against tube amps like the miniwatt (see link below). When you look at the amp which has been built here and is nice and compact and actually can produce good music and is not a tube amp just to be one, more to the DIYers.
miniwatt
When my 6AS7 is a small tube amp (retro-thermionic Pinot KiSharn - see image) and sounds stunning across all music and this amp there is no need for these poor excuses for tube amps.
miniwatt
When my 6AS7 is a small tube amp (retro-thermionic Pinot KiSharn - see image) and sounds stunning across all music and this amp there is no need for these poor excuses for tube amps.
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Amp looks good. I don't like blue Edcor's in most amps but blue with blue looks good. Camouflage works. 
Hmm, funny...thats what i think of SE 6AS7 amps. If I had to choose, I'd take the Miniwatt any day...not for looks (yours look better) but for sonics.
Something surreal going on here. When you say big do you mean they have a big charisma, a big heart or what exactly do you mean? What's the max DC current of those OT's?
Hmm, funny...thats what i think of SE 6AS7 amps. If I had to choose, I'd take the Miniwatt any day...not for looks (yours look better) but for sonics.
Something surreal going on here. When you say big do you mean they have a big charisma, a big heart or what exactly do you mean? What's the max DC current of those OT's?
Amp looks good. I don't like blue Edcor's in most amps but blue with blue looks good. Camouflage works.
Hmm, funny...thats what i think of SE 6AS7 amps. If I had to choose, I'd take the Miniwatt any day...not for looks (yours look better) but for sonics.
Something surreal going on here. When you say big do you mean they have a big charisma, a big heart or what exactly do you mean? What's the max DC current of those OT's?
Yes the current rating of Edcor OPTs has been questioned before. It should be stated especialy to help us in the SE camp. On request Edcor will tell you.Amp looks good. I don't like blue Edcor's in most amps but blue with blue looks good. Camouflage works.
Hmm, funny...thats what i think of SE 6AS7 amps. If I had to choose, I'd take the Miniwatt any day...not for looks (yours look better) but for sonics.
Something surreal going on here. When you say big do you mean they have a big charisma, a big heart or what exactly do you mean? What's the max DC current of those OT's?
By big I mean larger wattage rating for the amp you are building. For example I'm building a SE 300B amp for a customer. As it was I went for 30W Hamond OPTs put I would have chosen something similar in an Edcor. I required larger OPTs due to the 94mA of idle current though the amp will only produce 7.5W.
see image of amp.
Also though I have not proved it nor have I heard a miniwatt I would put my money on my 6AS7 SE as a better performer. I only know one person with a miniwatt. I may have to borrow it to compare.
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i notice the 300b you are building cost $4k so far according to your blog, i dont see how thats a good investment, if i was to spend $4k on an amp i would have custom OPTX or something better like LUNDAHL, hammond is good too but not $4k. the the top plate would be custom too like the one you get from FRONPANNEL.COM
The JJ Full Music 300B/SE tubes were over $600 alone. No expertise required this is what the parts cost. I'm building the amp for a friend so the parts cost is accurate. The Hammonds (OPTs and choke) and power Tranni were expensive. I bought EH 300Bs to test the amp with and an additonal Treasure 6SN7 so there is some additional/spare parts also. The cost is for the total project. The Audio Note Silver caps were $400.
It would be a little cheaper if the "extras" were removed.
here's my RH84 and SE kt88.
RH84 ttal cost with edcor ptx and transcendar optx under 1k
SE kt88 edcor optx and ptx way under $1.5k
RH84 all vintage tubes
SE kt88 i run them with a few different set of tube but mainly gold lion kt88.
i built these for myself so no labor charge to me
RH84 ttal cost with edcor ptx and transcendar optx under 1k
SE kt88 edcor optx and ptx way under $1.5k
RH84 all vintage tubes
SE kt88 i run them with a few different set of tube but mainly gold lion kt88.
i built these for myself so no labor charge to me
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here's my RH84 and SE kt88.
RH84 ttal cost with edcor ptx and transcendar optx under 1k
SE kt88 edcor optx and ptx way under $1.5k
RH84 all vintage tubes
SE kt88 i run them with a few different set of tube but mainly gold lion kt88.
i built these for myself so no labor charge to me
Hi Tim
Nice amps indeed!
Is the KT88SE running triode, ultralinear or pure tetrode?
Steve