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Torii Mark III to Mark IV conversion thread (Read 3045 times)
tgarden
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Torii Mark III to Mark IV conversion thread
10/15/13 at 16:26:16
 
For any and all who may be interested, I felt it would be a good idea to get a thread going about Torii Mk III/Mk IV conversions.

My Torii III has been at Decware since Labor Day.  The conversion was finished two weeks ago, and shipped last Friday.  The shipping delay was due to a BIG Decfest, with 150 attending.

I'll have the converted unit on Thursday. Price for the Mk III/Mk IV conversion was $700 plus shipping.

I'm going to start using the type of Tung Sol KT66's that Steve voiced it with, but also have a couple matched quads of NOS 60's Siemens EL34's. I'm hoping the EL34's will still sound good/ok in this new conversion.

 One thing I noticed, the construction of those vintage Siemens is noticeably better than the new production KT66's.  Looks aren't everything, though.

Mike in Seattle area
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Lon
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Re: Torii Mark III to Mark IV conversion thread
Reply #1 - 10/15/13 at 17:57:06
 
That's exciting Mike! Sorry for the delay but you'll have it in a few days and the fun will begin!

I know you'll keep us posted.
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stone_of_tone
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Re: Torii Mark III to Mark IV conversion thread
Reply #2 - 10/15/13 at 18:37:17
 
Cool Mike. I look forward to your impressions. I sold my Torii MkIII, 1.5 years ago. I had it for four months. I would be getting mine back right now too....as a IV if I kept it.

Anyway, I have a Mystery Amp coming mid January (approx.)....I ordered it last Monday on the 7th. I am also on track to order the MkIV next August.

Simply put: I want the Mystery Amp, Torii MkIV, along with the SE84CS and Super Zen CKC I already have for the versatility and different flavor's.      

Once again, look forward to your impressions.   -S
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tgarden
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Re: Torii Mark III to Mark IV conversion thread
Reply #3 - 10/16/13 at 00:26:32
 
Lon and Stone,  I'll certainly keep you posted with my impressions.

Stone,  You're getting both the Mystery and the Mark IV? (next August).
That'll be a lot of fun:)

Anyone else send their Mark III in yet, for the Mark IV conversion?

Mike
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tom collins
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Re: Torii Mark III to Mark IV conversion thread
Reply #4 - 10/16/13 at 18:58:17
 
my good listening friend just got a four a few weeks ago.  looking forward to hearing that one.  it would have to be a massive improvement to get me to send mine back.
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tgarden
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Re: Torii Mark III to Mark IV conversion thread
Reply #5 - 10/16/13 at 21:26:07
 
I will admit, that with the 2 way shipping costs, the price does add up.
Shipped my Mark III to Decware by FedEx, they sent it back by UPS.

Approx. $145 shipping costs on top of the $700, plus I triple-boxed mine for shipping out, so some cost for boxes and bubble pack.

I was going to send mine back to Decware anyway, to upgrade to Jupiter Beeswax cryoed aluminum foil caps.  The Jupiters by themselves, are a big upgrade in my ZP3 and ZSM's.  Higher resolution, more musical sounding, than even the Vcaps formerly in my ZSM's.

Mike in Seattle area
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« Last Edit: 10/16/13 at 21:27:02 by tgarden »  
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RoyMercer
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Re: Torii Mark III to Mark IV conversion thread
Reply #6 - 10/23/13 at 15:24:49
 
I sent mine back. I received the tracking number yesterday. I should have my Torii III converted to IV by end of week. I will also post my thoughts after I get it back into my system for a while.
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tgarden
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Re: Torii Mark III to Mark IV conversion thread
Reply #7 - 10/24/13 at 04:39:43
 
I received my converted MK IV last Thursday afternoon, and have managed to put about 115 hours on it in six days (I'm dedicated to getting it burned in).

Before hooking it up, I pulled the amp off the chassis to take a look inside. Never having done this to my Mk III, I had nothing to compare to, but I was still able to figure out most of the conversion work.  It was very neatly done.

The cool thing is, instead of installing four Jupiter caps, Steve left my four existing "big" V Caps in the amp, and added two much smaller (physically and value wise) Jupiters.  The Jupiters are in the final stage, to give it that Jupiter sound.

It's nice Steve left the V Caps in. They were a $500 option originally, and while not up to the level of the Jupiters, they are no slouch in the sonics department when you get a lot of hours on them (mine have 1500-2000 hours).  

I would imagine the sound from having 4 V Caps and 2 Jupiters, differs slightly from having the "stock" 4 Jupiters in the Mk IV. I'll never know.

What I do know is that even with only 115 hours on the two Jupiters and the new? wiring and four new switches, I greatly prefer it to the Mk III it used to be.

The biggest thing is "music magnified" soundstage that Steve talked about.  Not sure how to describe this yet, I'll get back later when the amp has more hours on it.

Imaging is better than with the Mk III, the individual musicans have greater depth, more of a three dimensional quality.

Increased detail over what I had, in it's earlier Mk III, V Capped version.

I was surprised that the bass started coming in nicely, at 75 hours, no complaints there!

I installed my usual tube compliment (more about that later) with the addition of Tung Sol KT 66's.  However, I started out (I have no idea why) with CBS JAN OA3's.  I noticed there was a trace of hardness to the sound, which I got from time to time with the Mk III.  At 50 hours I switched to my usual RCA JAN OA3's, and the hardness went away. It is very sensitive to OA3 changes.

This is all with my Joseph Chow restored/modded Tandberg 3001a tuner, which is neutral in sound.  No added warmth with this upper end tuner!

I tried playing a few LPs, but am patiently waiting 'till I get some more hours on the MK IV conversion, before I get serious about delving into vinyl.  Once I do, I'll be lost in another world.  It's looking like that world will be a very nice place:)

Mike






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« Last Edit: 10/24/13 at 05:31:53 by tgarden »  
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tgarden
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Re: Torii Mark III to Mark IV conversion thread
Reply #8 - 10/24/13 at 04:56:45
 
A brief note on the two treble adjusting switches.  Turn them all the way up, and the treble becomes very airy, quite light and spacious.

Turn it downwards, and the treble has more body, becomes more solid.  I'm leaving them in the dead center position for now.

It's sounding great!
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will
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Re: Torii Mark III to Mark IV conversion thread
Reply #9 - 10/24/13 at 04:56:57
 
Thanks Mike!
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« Last Edit: 10/24/13 at 04:58:07 by will »  

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Re: Torii Mark III to Mark IV conversion thread
Reply #10 - 10/24/13 at 10:53:37
 
Thanks for your impressions Mike. Glad you feel it's a real improvement.
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tgarden
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Re: Torii Mark III to Mark IV conversion thread
Reply #11 - 10/24/13 at 15:28:09
 
Will and Lon, I'll be back with additional info/comments, soon.

Mike
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« Last Edit: 10/24/13 at 16:33:09 by tgarden »  
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grillski2000
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Re: Torii Mark III to Mark IV conversion thread
Reply #12 - 10/30/13 at 03:33:30
 
Hey,

I turned in my Torri 3 to get it turned into a Torri 4. Received it today and I noticed a difference right away. With my setup it seems that the sound is much more clearer, and 3 D with the KT66's. I flipped some switches in the back and somehow added some more life to the music. Cant wait for the tubes and Caps to break in more.  But right away overall seems to be more "Magical" than the way my Torri 3 sounded.  But then again I might be listening to the music too loud and crackin my eardrums causing weird vibrations in my head.  

-Dave
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tgarden
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Re: Torii Mark III to Mark IV conversion thread
Reply #13 - 10/30/13 at 05:17:19
 
Dave, I completely agree with the impressions you received "right off the bat".

Yeah,  those switches in the back, make quite a difference:)

I'm glad you like your converted amp.  I've got 200 hrs.+ on my MK IV conversion, with plenty of cooling off periods to help break those caps in.

Lately I've had almost no free time, but I'll post my next round of thoughts about the Torii 4, after we get past Halloween a few days from now.

Mike
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grillski2000
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Re: Torii Mark III to Mark IV conversion thread
Reply #14 - 10/30/13 at 05:45:20
 
Hey T.G. I noticed though that my converted Torri 3 to 4 didn't come with the Two bass toggle switches by the volume control that's on the Torri 4. (The ones that use to be for switching a to b inputs and the other side was the bias switch) Now the one on the left is still the same and the one on the right, not sure what it does...cant tell the difference. Maybe this is the all in one bass switch. Not sure though.
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