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by MLAS
Wed Oct 18, 2017 11:37 am
Forum: Preamps
Topic: Difference between a Evolution 20 and 20SE
Replies: 15
Views: 138

Re: Difference between a Evolution 20 and 20SE

Yes I have had contact with Jeff Fischel before regarding my Premier Five amps. If you look at the Premier Seven B comments (introduced in 1992 the same year as the EVO20SE) on the CJ corporate site you find this: "The Premier Seven-B switched to machined oxygen free copper input/output jacks, upgra...
by MLAS
Tue Oct 17, 2017 4:50 pm
Forum: Preamps
Topic: Difference between a Evolution 20 and 20SE
Replies: 15
Views: 138

Re: Difference between a Evolution 20 and 20SE

The update came from:
Bill Thalman of Music Technology Inc. in Springfield VA that specializes among others with upgrading of CJ equipment.
by MLAS
Tue Oct 17, 2017 4:48 pm
Forum: Preamps
Topic: Difference between a Evolution 20 and 20SE
Replies: 15
Views: 138

Re: Difference between a Evolution 20 and 20SE

Just a small update from one of the designers of the EVO20: " I did work for CJ during that period and did the mechanical drawings and circuit board designs for the EV20, though the details of all that do fade with time. I do vaguely remember that there were two iterations of the EV20, but I think t...
by MLAS
Tue Oct 10, 2017 11:04 am
Forum: General Discussion - CJ related topics
Topic: Conrad Johnson Factory Tour - 2003 Soundstage! article
Replies: 5
Views: 675

Re: Conrad Johnson Factory Tour - 2003 Soundstage! article

That's a dead link sadly....

Any other place on the web for that CJ 2003 factory tour?
by MLAS
Tue Oct 10, 2017 8:31 am
Forum: Preamps
Topic: Difference between a Evolution 20 and 20SE
Replies: 15
Views: 138

Re: Difference between a Evolution 20 and 20SE

Hi Roberto, Just looked for the first time at the pictures I took from my EVO20 and I saw the 'SE' after the model designation for the first time. I did not see when I bought it so I feel kind of lucky now having a SE version too. IMG_2180.JPG The 6GK5's inside are all American made Sylvania's. IMG_...
by MLAS
Mon Oct 09, 2017 5:44 pm
Forum: Preamps
Topic: Difference between a Evolution 20 and 20SE
Replies: 15
Views: 138

Re: Difference between a Evolution 20 and 20SEa

I've seen a modified SE with six .47uF VCaps for sale at EBay and USaudiomart.com by the same seller. He informed me that this mod was performed by Bill Thalman of Music Technology in Alexandria va. So he did not substitute the four 2uF caps that are in the signalpath but he paralelled them with .47...
by MLAS
Fri Oct 06, 2017 12:36 pm
Forum: Preamps
Topic: Difference between a Evolution 20 and 20SE
Replies: 15
Views: 138

Re: Difference between a Evolution 20 and 20SE

Thanks, I will probably try some Teflon caps in the signal but the VCaps do cost a small fortune especially the bigger values like the 2uF. CJ Inc. did not mention those metalfoil resistors as being part of the SE upgrade only the Cardas wire but maybe they forgot themselves. Happy listening too! Ro...
by MLAS
Fri Oct 06, 2017 10:08 am
Forum: Preamps
Topic: Difference between a Evolution 20 and 20SE
Replies: 15
Views: 138

Re: Difference between a Evolution 20 and 20SE

Hi Roberto,

Thanks for all the music tips!

Yes CJ equipment is wonderfull to listen to.
I can do some tuberolling now and maybe change the MKP's that are in the signal.
But I love it already without any mods.

Cheers,

Robert
by MLAS
Fri Oct 06, 2017 4:08 am
Forum: Preamps
Topic: Difference between a Evolution 20 and 20SE
Replies: 15
Views: 138

Re: Difference between a Evolution 20 and 20SE

Hola...SE stands form Special Edition. Its the same circuit, but quality parts are used...much more expensive. Happy listening, Roberto. Hi Roberto, Thanks for your reply. I contacted CJ also and they said that the only difference was that all the audiowiring was a special Cardaswire. You can still...
by MLAS
Thu Oct 05, 2017 6:13 am
Forum: Preamps
Topic: Difference between a Evolution 20 and 20SE
Replies: 15
Views: 138

Difference between a Evolution 20 and 20SE

Goodmorning, Just bought a CJ Evolution 20 pre-amp. At first I couldn't find V1 & V2 (6CW4 tubes) because they are so tiny and look like FET's. Can't find a bunch of information about this pre-amp. I gathered that there's also a 'SE' version of it and does anybody the difference between the normal a...
by MLAS
Tue Dec 06, 2016 6:55 pm
Forum: Amplifiers
Topic: Premier Five: EL34, KT77 or 6550
Replies: 5
Views: 429

Re: Premier Five: EL34, KT77 or 6550

Hey mate, that's a wonderful combination of CJ pre-power classic. They don't make amplification like that anymore, unless it was to cost a fortune... In my experience, I have not come across an amplifier based on an EL34 (ultra-linear mode) being able to directly take in other types of output tubes...
by MLAS
Tue Dec 06, 2016 9:13 am
Forum: DIY, mods, tweaks
Topic: Conrad Johnson Premier 5 resurrection.
Replies: 3
Views: 919

Re: Conrad Johnson Premier 5 resurrection.

Great undertaking with probably the best electrolytics (RIFA). Where How's the project going in the mean time? I have a pair Premier Fives myself with a Premier Three pre and thinking about substituting the EL-34's for KT77's. What was your experience with that? I see you have now installed the Wing...
by MLAS
Tue Dec 06, 2016 4:21 am
Forum: Amplifiers
Topic: Premier Five: EL34, KT77 or 6550
Replies: 5
Views: 429

Re: Premier Five: EL34, KT77 or 6550

Hey mate, that's a wonderful combination of CJ pre-power classic. They don't make amplification like that anymore, unless it was to cost a fortune... In my experience, I have not come across an amplifier based on an EL34 (ultra-linear mode) being able to directly take in other types of output tubes...
by MLAS
Sun Dec 04, 2016 2:14 pm
Forum: Amplifiers
Topic: Premier Five: EL34, KT77 or 6550
Replies: 5
Views: 429

Premier Five: EL34, KT77 or 6550

Hi Guys, Have a Premier Three & Five combinations and I think the EH 34 powertubes need be changed. I consider this three offerings from New Sensor: 1. EL 34 Mullard; 2. KT77 from Genalex; 3. 6550 from Tungsol, Need 16 in total of them so NOS is out of the question. In know of course that the three ...
by MLAS
Thu Nov 17, 2016 4:13 pm
Forum: General Discussion - CJ related topics
Topic: Question about older C-J D capacitors...
Replies: 19
Views: 3815

Re: Question about older C-J D capacitors...

Okay, thanks for your information so far.
by MLAS
Thu Nov 17, 2016 4:01 pm
Forum: Preamps
Topic: CJ Premier Three built quality
Replies: 0
Views: 328

CJ Premier Three built quality

Hi There, Just bought a CJ Premier Three (B revision) to accompany my Premier Fives amps. After I detected a nasty smell in the room when I listened to the unit in my setup for a while I opened up the 'hood' and saw that the PCB under the bridge-rectifier was completely black. The orange jacket of t...
by MLAS
Thu Nov 17, 2016 2:14 pm
Forum: General Discussion - CJ related topics
Topic: Question about older C-J D capacitors...
Replies: 19
Views: 3815

Re: Question about older C-J D capacitors...

Okay you're on the move the current highend audio from CJ. Do you have by any chance the accompenying Part List with your schematic of the Three B? Love to have a highres from the schematic because my powersupply has been modified by a inexperience technician. You're inside pictures too please. They...