Bottlehead 6C45 spud amp
post-749407
Thread Starter
Post #1 of 15

timoteus

500+ Head-Fier
Joined
Jun 22, 2001
Messages
949
Reaction score
11
Joined
Jun 22, 2001
Posts
949
Likes
11
Another in a line of fantastic reference studio headphone amps from Bottlehead. It's very involved so you'll have to follow the thread to get the lowdown. Single stage, single ended, parallel feed, current sources, dual mono power supplies, autoformers, custom coupling caps...






http://www.audioasylum.com/forums/bo...ges/78900.html
 
     Share This Post       
post-749491
Post #2 of 15

smokey

500+ Head-Fier
Joined
Feb 19, 2002
Messages
591
Reaction score
10
Joined
Feb 19, 2002
Posts
591
Likes
10
One reason that I hate April Fool's day is that I never know whether or not my rather large leg is being pulled. Having read the thread on AA, I'm still not sure. I always thought Doc B was into low cost DIY stuff, not this $7,000 to $8,000 price range. But maybe I'm mistaken.

Oh well, good luck if this is a real product. I'm not sure who the customers will be, but I doubt it'll be too many of us though, at that price.
 
     Share This Post       
post-749510
Post #3 of 15

grinch

Cognac....icky.Scotch....icky.Vodka....
Joined
Jan 1, 2002
Messages
3,077
Reaction score
11
Joined
Jan 1, 2002
Posts
3,077
Likes
11
$7-8k? who is he kidding?

thank goodness, another overpriced amp made with hd600 in mind, and after all these years of waiting..

then again, it could be an april fool's joke.
 
     Share This Post       
post-749528
Post #4 of 15

ooheadsoo

Headphoneus Supremus
Joined
Dec 11, 2002
Messages
4,835
Reaction score
11
Joined
Dec 11, 2002
Posts
4,835
Likes
11
according to the thread, the customer is a recording engineer, and the price is only there because someone asked how much it would be if he were to make it again. Who knows.
 
     Share This Post       
post-749533
Post #5 of 15

timoteus

500+ Head-Fier
Joined
Jun 22, 2001
Messages
949
Reaction score
11
Joined
Jun 22, 2001
Posts
949
Likes
11
It's true the Bottlehead lineup is reasonably priced DIY kits. But as was stated in the thread, they hope this technology will trickle down to their kits. The original schematic that this amp is based on was published in their VALVE online magazine and was called Kugelis. They have built a few versions of this for studio monitoring. One of them was built for Paul Stubblebine Mastering.

Gary Dahl's Espressivo was based on these amps although his is tricked out with Gary Pimm's awesome hybrid pentode/mosfet cascode constant current sources (PMCCCS) and rectified with 6CJ3 damper diodes.

http://nutshellhifi.com/gary/index.html
 
     Share This Post       
post-749738
Post #6 of 15

TimSchirmer

Repelling digital infidels. (Would that be called the Digifadah?)
Joined
Nov 22, 2001
Messages
3,233
Reaction score
53
Joined
Nov 22, 2001
Posts
3,233
Likes
53
Quote:

Originally posted by grinch

thank goodness, another overpriced amp made with hd600 in mind, and after all these years of waiting..


haha i'll drink to that
 
     Share This Post       
post-749751
Post #7 of 15

ipodstudio

Banned: - aka full monty - aka didikossa - aka R1D1 - aka migraineboy - aka setharmstrong - aka threavester - aka Sarah.B - aka javier - aka DoomV1 - aka JIAA
Joined
Jan 11, 2004
Messages
2,457
Reaction score
13
Joined
Jan 11, 2004
Posts
2,457
Likes
13
I just find it amazing how many great headphone amps there are out there! Heck, I've now uploaded 122 amps over at "the ipod studio", and I keep finding more...
 
     Share This Post       
post-749898
Post #8 of 15

braillediver

Headphoneus Supremus
Joined
Jun 9, 2002
Messages
4,547
Reaction score
20
Joined
Jun 9, 2002
Posts
4,547
Likes
20
The thread indicates:

"headphone autoformer with selectable 600/240/60 ohm taps."

So it's made for use with other than HD600's.


Further down here's the interesting part:

"Well, we have a certain "secret" project right at the top of the list. PJ and I will probably start putting a production prototype together after I get back from a short vacation next week.
Among other things (think versatility, lots of versatility) this device should have a headphone jack and cost a whole lot less than a K dollar.

Can't spill too much more info. Suffice it to say that parafeed autoformer technology is one of those things that would be trickle down technology from our studio gear."


I've talked to them several times and they say "just wait and see"?





Mitch
 
     Share This Post       
post-750036
Post #9 of 15

NotoriousBIG_PJ

Step 1: Plug power cable into wall. Step 2: Plug other end of power cable into....umm.... Step 0.5: Order something to power with power cable.
Joined
Mar 12, 2002
Messages
3,487
Reaction score
18
Joined
Mar 12, 2002
Posts
3,487
Likes
18
Quote:

Originally posted by TimSchirmer
haha i'll drink to that


Hehe, you'll drink to anything.. :p

Biggie.
 
     Share This Post       
post-750737
Post #10 of 15

LeasingGuy

Head-Fier
Joined
Dec 7, 2003
Messages
85
Reaction score
10
Joined
Dec 7, 2003
Posts
85
Likes
10
Ron Wellborne should have some interesting new projects turning up soon, we'll have to keep an eye out....

Anyone ever build the Ulrtapath with a headphone tap ?
 
     Share This Post       
post-752115
Post #11 of 15

braillediver

Headphoneus Supremus
Joined
Jun 9, 2002
Messages
4,547
Reaction score
20
Joined
Jun 9, 2002
Posts
4,547
Likes
20
Recently posted by Doc B on the BottleHead site:

However another small hint for those following the secret project that we are working on. Along with stereo SET operation we will explore modding this project for mono class AB1 triode PP, hoping for about 10W.

Headphones...10W...SE...PP....way less than $1K...what the heck are Doc and PJ working on anyway?! Hopefully we'll have a little more to share in a week or so.


Soon? I'm local so I'll pick it up in person I hope? That is if it will work with low impedance headphones since Grados Rule in this household


Mitch
 
     Share This Post       
post-753061
Post #12 of 15

timoteus

500+ Head-Fier
Joined
Jun 22, 2001
Messages
949
Reaction score
11
Joined
Jun 22, 2001
Posts
949
Likes
11
Quote:

Originally posted by braillediver
Recently posted by Doc B on the BottleHead site:

However another small hint for those following the secret project that we are working on. Along with stereo SET operation we will explore modding this project for mono class AB1 triode PP, hoping for about 10W.

Headphones...10W...SE...PP....way less than $1K...what the heck are Doc and PJ working on anyway?! Hopefully we'll have a little more to share in a week or so.



A combination linestage/headphone amp/integrated? Switchable between SE for linestage/headphone use and PP for speakers? The confusing part is the mention of mono. Why that?
 
     Share This Post       
post-753494
Post #13 of 15

Juergen

100+ Head-Fier
Joined
May 13, 2003
Messages
372
Reaction score
16
Joined
May 13, 2003
Posts
372
Likes
16
Quote:

Originally posted by timoteus
............... The original schematic that this amp is based on was published in their VALVE online magazine and was called Kugelis. ................


http://stcasimirs.com/recipies/Kugelis.htm

excellent with sour cream and applesauce
 
     Share This Post       

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top