Recommend a truly balanced pre or buffer

JohnR · « **Reply #20 on:** 14 Mar 2011, 09:51 am »

Quote from: eclein on 13 Mar 2011, 11:19 pm

Guys...whats the difference in TRULY balanced vs. whatever you'd call Not Truly balanced....Is someone able to give me like the Flinstones version of what Truly means, is it that each channel is totally separate from the other??

A balanced circuit is a specific type of circuit topology that basically has one copy of the amplification circuit for the "positive" phase and a copy for the "inverted" phase. The two halves are "joined at the waist" so to speak. The "true" designation means that the circuit is actually as implied by the term "balanced."

jtwrace · « **Reply #21 on:** 14 Mar 2011, 11:28 am »

Quote from: zybar on 13 Mar 2011, 11:13 pm

I have a MP-1 here and it is by far the best preamp I have had in my system.

Next weekend I should have the chance to directly compare it to a BAT Rex preamp.

George

I'll be waiting for the full report after this weekend.

eclein · « **Reply #22 on:** 14 Mar 2011, 01:29 pm »

Thanks John!!! Now I get it....

poseidonsvoice · « **Reply #23 on:** 14 Mar 2011, 04:18 pm »

Quote from: JohnR on 14 Mar 2011, 09:51 am

A balanced circuit is a specific type of circuit topology that basically has one copy of the amplification circuit for the "positive" phase and a copy for the "inverted" phase. The two halves are "joined at the waist" so to speak. The "true" designation means that the circuit is actually as implied by the term "balanced."

The devil is in the details. Perfect John, thanks!

Anand.

zybar · « **Reply #24 on:** 14 Mar 2011, 10:14 pm »

Quote from: jtwrace on 14 Mar 2011, 11:28 am

I'll be waiting for the full report after this weekend.

Might be a moot point since I bought a MP-1 today.

Actually, I still want to to do the comparison, but I like what I am hearing so much that I went with the MP-1 when a deal came up that was too good to pass on.

George

skunark · « **Reply #25 on:** 14 Mar 2011, 10:43 pm »

To name a few more:
Ayre K-5xe, KX-R,
Simaudio P7, P9,
McIntosh C500, C1000
~~Marantz SC-7S2 (believe it is)~~

edited to reflect tube designs

jtwrace · « **Reply #26 on:** 14 Mar 2011, 10:47 pm »

Quote from: zybar on 14 Mar 2011, 10:14 pm

Might be a moot point since I bought a MP-1 today.

Actually, I still want to to do the comparison, but I like what I am hearing so much that I went with the MP-1 when a deal came up that was too good to pass on.

George

Where was the deal?

jtwrace · « **Reply #27 on:** 7 Apr 2011, 07:23 pm »

Quote from: zybar on 14 Mar 2011, 10:14 pm

Might be a moot point since I bought a MP-1 today.

Actually, I still want to to do the comparison, but I like what I am hearing so much that I went with the MP-1 when a deal came up that was too good to pass on.

George

Well, did you get it? How does it sound? Do tell!!!

zybar · « **Reply #28 on:** 7 Apr 2011, 07:29 pm »

Quote from: jtwrace on 7 Apr 2011, 07:23 pm

Well, did you get it? How does it sound? Do tell!!!

Ralph is giving it a final listen as I type and I will have it early to mid next week.

I don't expect it to sound much different from the MP-1 I have been listening to for the last month or so. The only difference is that the unit I have been borrowing is using the standard Teflon V-Caps and my unit will have the Copper in Foil V-Caps.

George

jtwrace · « **Reply #29 on:** 7 Apr 2011, 07:32 pm »

Quote from: zybar on 7 Apr 2011, 07:29 pm

Ralph is giving it a final listen as I type and I will have it early to mid next week.

I don't expect it to sound much different from the MP-1 I have been listening to for the last month or so. The only difference is that the unit I have been borrowing is using the standard Teflon V-Caps and my unit will have the Copper in Foil V-Caps.

George

I must have missed it but who owns the MP-1 that you're using now?

zybar · « **Reply #30 on:** 7 Apr 2011, 07:33 pm »

Quote from: jtwrace on 7 Apr 2011, 07:32 pm

I must have missed it but who owns the MP-1 that you're using now?

A very generous fellow AC member.

George

jtwrace · « **Reply #31 on:** 7 Apr 2011, 09:32 pm »

Quote from: zybar on 7 Apr 2011, 07:33 pm

A very generous fellow AC member.

George

Is he selling it?

zybar · « **Reply #32 on:** 7 Apr 2011, 10:01 pm »

Quote from: jtwrace on 7 Apr 2011, 09:32 pm

Is he selling it?

Nope.

George

Bill Baker · « **Reply #33 on:** 8 Apr 2011, 01:15 am »

Quote

The only difference is that the unit I have been borrowing is using the standard Teflon V-Caps and my unit will have the Copper in Foil V-Caps.

The only difference? I think you will find a noticable difference in just the caps alone. The CUTF capacitors are very smooth with a bit more body compared to the TFTF.

zybar · « **Reply #34 on:** 8 Apr 2011, 01:23 am »

Quote from: Bill Baker on 8 Apr 2011, 01:15 am

The only difference? I think you will find a noticable difference in just the caps alone. The CUTF capacitors are very smooth with a bit more body compared to the TFTF.

Sounds like I am in for a treat Bill.

George

Bill Baker · « **Reply #35 on:** 8 Apr 2011, 02:11 am »

I think so George. We are using the CUTF in part of the circuit of our $25K Ultra GT preamp.

rajesh · « **Reply #36 on:** 8 Apr 2011, 03:03 am »

Quote from: jtwrace on 13 Mar 2011, 08:04 pm

I'm looking at replacing my Dodd Buffer with a truly balanced tube buffer or pre.

Balanced Pre? Hmm, PassDIY's BOSOZ (Bride of Son of Zen) comes to mind mind. Add a motorised LDR sourced from Uraih Dailey and you are in.

Any comments?

rajesh · « **Reply #37 on:** 8 Apr 2011, 01:16 pm »

Looks like you guys are not into DIY. How about this http://www.audiocircle.com/index.php?topic=93374.0

jtwrace · « **Reply #38 on:** 8 Apr 2011, 01:34 pm »

Quote from: rajesh on 8 Apr 2011, 01:16 pm

Looks like you guys are not into DIY. How about this http://www.audiocircle.com/index.php?topic=93374.0

It's not balanced.

rajesh · « **Reply #39 on:** 11 Apr 2011, 01:14 pm »

Quote from: jtwrace on 8 Apr 2011, 01:34 pm

It's not balanced.

Oops, it has XLR connectivity so thought it is balanced. My bad

Anyways, it is now sold.

BTW, since I'm trying to understand DIY amp building and since I've noted that you were actively involved in the thread on Class D Audio, could you share your thoughts on building a BOSOZ Pre?

Rgds

Rajesh