Tube Rolling w/Crack

[lior.amsalem]

While waiting for my 5998, I'm really enjoying my new Mullard set (6as7g with 12au7)

[Kris]

Thank you PB.

[Downhome Upstate]

I stopped playing around with bypassing the Dayton film caps in the Crack, and rolled in a 'platinum' NOS Mullard CV4003 from Upscale. More prominent (and fuller) mids, more air around instruments for sure, deeper bass, but there was still something missing.

Got a vintage RCA 6080 from Jim McShane, replaced the stock Sylvania 6080 with the RCA tube and, Whoa, Nelly!!  I'm just about not believing what I'm hearing thru the HD600s with this combination.

Why did it take me so long to discover this? I wasted several thousand dollars looking for what I could have had for closer to $750.

A Crack and a pair of high impedance 'phones ought to be mandatory continuing auditory education before folks go spending big bucks on audio gear chasing 'the absolute sound'.

[Mike B]

I got excellent results with the "incentive" tubes Dan offered to the first "lucky 6"

An NOS Sylvania triple mica 6080 and an NOS RCA clear top side getter.

Both bought off ebay for about $12 each

[John EH]

I got excellent results with the "incentive" tubes Dan offered to the first "lucky 6"

An NOS Sylvania triple mica 6080 and an NOS RCA clear top side getter.

Both bought off ebay for about $12 each

I've got some JAN Phillips triple mica 6080's which are probably the same rebranded tube that are the best of the 6080's I've heard.

Still the best 12au7 in my cracks are the CV4003 Mullard box plates.

[Mike B]

I did get one of those box plates and it does sound the best.  A little richer in the mids I would say.

And I do mean a little.  It cost $85.  I would much rather have 6 RCA clear tops.

[Paul Birkeland]

I did get one of those box plates and it does sound the best.  A little richer in the mids I would say.

And I do mean a little.  It cost $85.  I would much rather have 6 RCA clear tops.

Ouch, I just snagged a pair for $20

[John EH]

Finally pulled the trigger on a Chatham Tung-Sol 5998 and WOW! much better than the 6080 in my opinion.  Tighter bass. Much more clarity. 

Crack is even more amazing!

John

[Loquah]

Have you ever hear a GEC 6AS7G brown base, John? I love mine, but I've never heard a 5998 to compare it with.

[John EH]

Never heard one.

This Chatham Tung-Sol 5998 is where its at.  Best 6080 variant I've heard to date.

I'm streaming MOG now listening to Dylan and I'm blown away.  The 5998 is a bit expensive but worth the money if you ask me.

Looks cooler too.

[w0lfd0g]

Having my farewell session with the Crack atm.  Tung Sol 7236 + 1959 Amperex 7316 with D Getter - Heaven. 

But tube rolling has been too addictive for me.  Going SS for a while.  Selling my Crack, all my tubes and my tube tester.

So long and thanks for all the fish.

[Natural Sound]

Having my farewell session with the Crack atm.  Tung Sol 7236 + 1959 Amperex 7316 with D Getter - Heaven. 

But tube rolling has been too addictive for me.  Going SS for a while.  Selling my Crack, all my tubes and my tube tester.

So long and thanks for all the fish.

You'll be back. 

[John EH]

Having my farewell session with the Crack atm.  Tung Sol 7236 + 1959 Amperex 7316 with D Getter - Heaven. 

But tube rolling has been too addictive for me.  Going SS for a while.  Selling my Crack, all my tubes and my tube tester.

So long and thanks for all the fish.

What kind of tube tester do you have?

[w0lfd0g]

Hi John

It's just a emissions tester, but quite a nice one: Precision Apparatus 612 (with manual, tube test data and updates).  Hardwired for Australian voltage and digitally modified to reduce warm up time (I'm quoting the person I bought it from).

Cheers

[Paul Birkeland]

I have a 612 as well.  It tends to be uncommon to find a tester with all the old jumbo sockets - this one was just the ticket!