Head-Fi.org › Forums › Equipment Forums › Headphone Amps (full-size) › Info on Creek OBH-21 and OBH-21 SE amps.
New Posts  All Forums:Forum Nav:

Info on Creek OBH-21 and OBH-21 SE amps. - Page 2

post #16 of 89
Quote:
Please let us know when you get to see the OBH-21 SE's schematics and reveal your thoughts about it.
Someone will have to trace out the circuitry, since Creek hasn't been known to release schematics themselves. Since I won't be buying one of these amps, it won't be up to me to get schematics out into the world. I'm not even sure I'd want them to be released, because that leads to messes like the RA-1, where everyone freaks out at the cost of what amounts to a repackaged CMoy amp, forgetting the cost of the custom casing and all the costs involved in international distribution. "Why, I could build one of those for $20!" But in fact, they can't. They can only build a cheap knockoff for $20.

Quote:
I understand your opinion is quite authoritative on this subject.
I'm not offering an opinion yet, I'm just being skeptical about press releases. I simply know that there are several ways of running from a single-voltage power supply and still avoid capacitors in the signal path. The fact that this "advanced circuitry...split[s] the
power supply" is a big clue that they're probably using some form of rail splitter. It's not magic, but the press release would have you believe that it is.
post #17 of 89
Thread Starter 

New Creek Amp's Internal Circuitry

The following pics show what the OBH-21 and the OBH-21 SE's guts actually look like. Notice the additional integrated circuit in the SE version:





Cheers,
Alex Altorfer
post #18 of 89
Looks like several extra resistors and film caps in the SE version, plus one chip. Find out what that DIP-14 chip is, and you'll probably solve the mystery. Duncan?
post #19 of 89
It's almost disgusting how much we're paying for such a simple apparatus. The new creek sells for ~400 USD and the circuit looks remarkably simple. Reminds me of my car audio days..


tre
post #20 of 89
What I don't understand is why there are two versions. It looks like the 21 is just a slightly stripped-down 21SE. Or am I missing something?

Anyone have a pic of the inside of the 11SE for comparison?
post #21 of 89
I spoke to Michael creek the other day on this matter and there are no components changes anywhere. It is an OBH 11 SE in a longer case.

Michael said it was necessary to make the case longer as they had received complaints that the OBH-11SE tilted upward if heavy cables were used.

The amps have the same innards as the OBH-11 amps except they are housed in a longer case.

The prices are £150 for the 21 and £250 for the 21SE

Same designs in longer cases pretty disappointing I thought

Just read alex's post and if this is the case then Mr. Creek has fed me a crock of BS with his information although he sounded serious enough??

Pinkie
post #22 of 89

Re: New Info on New Creek Amps...

Quote:
Originally posted by Alex Altorfer
Hello Again Everyone!

Jacki Pugh from Creek Audio has been very kind as she's just sent me fresh information on the new OBH-21 series amplifiers. I hereby quote her e-mail in full:



Please guys I'm still very much of a newbie so I'd like you all to comment on this and what it all represents. I suppose the use of opamps as opposed to a discrete circuit plus major powersupply modifications should really change the way these amps sound compared to their predecessors. Do you all agree? What sonic changes should we expect? Suppose one found it necessary, how easier (or more difficult) would it be to upgrade these new amp's components?

If this is the case then Mr. Creek was well and truly pulling my plonker!!!!

Cheers,
Alex Altorfer
post #23 of 89
Pink Floyd- How about getting back in touch with Mike Creek and tell him about Jacki's email saying otherwise and settle this once and for all?

------------------------------
Publius Enigma
post #24 of 89
Quote:
Originally posted by tangent
Looks like several extra resistors and film caps in the SE version, plus one chip. Find out what that DIP-14 chip is, and you'll probably solve the mystery. Duncan?
I'd be very hesitant to pop open the lid, especially on a forum that someone from Creek visits...

...If it needed to go back at all... bang goes the warranty
post #25 of 89
Quote:
Originally posted by Sean H
Pink Floyd- How about getting back in touch with Mike Creek and tell him about Jacki's email saying otherwise and settle this once and for all?

------------------------------
Publius Enigma
The only difference I can see between the OBH-11 and the OBH21 is a longer case and an ALPS pot... maybe he was right?

The specifications are identical... the same 70db SNR ratio with the same 10mW output.

Looks like an OBH-11 in a new box to me.

I would get in touch with him again but it would be pointless as I have no intention of purchasing either of these units... Duncan can ring him this time... see what he tells you Duncan?

Mike
post #26 of 89
Side by Side pic of 21 and 11 (non SEs). I don't know who to credit for the 11 pic.

post #27 of 89
Thanks Carlos3

They don't look the same to me..........
post #28 of 89
Yeah, they don't look the same, do they? With all these pics of the OBH head-amps popping up, does anyone have one of the OBH-11se's internals? I'd love to see, but I am too chicken to open my own for fear of voiding the warranty. I understand it is the only Creek headamp to be fully discrete?
post #29 of 89
Quote:
Originally posted by Carlos3
Side by Side pic of 21 and 11 (non SEs). I don't know who to credit for the 11 pic.
You got that right It is ,no B.S., same thing..........-_-;;
unlike 11, 11se got'emself some "mosfet" solded on it.
and w/o expensive "OBH2", it's crippled.....sound like same old marketing technique.....ain't it?....
post #30 of 89
Quote:
Originally posted by Carlos3
Side by Side pic of 21 and 11 (non SEs). I don't know who to credit for the 11 pic.

They certainly look different! Now I know that MC is having a laugh.
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Headphone Amps (full-size)
Head-Fi.org › Forums › Equipment Forums › Headphone Amps (full-size) › Info on Creek OBH-21 and OBH-21 SE amps.