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georgehifi

Responses from georgehifi

Unsatisfied with Esoteric K-01: Alternatives?
I lived many blissful years with my Reimyo CDP-777, but finally decided it was time to start the transition to PC audio. I opted for the Esoteric K01 in order to have the maximum playback flexibility with CD, SACD, and asynchronous USB DAC. Fast-f... 
Is no preamp really better that a good preamp?
Hi Rustler.Your PS Dac has from it's single ended output has 100ohms output impedance at 2.8v from it's "Resolution perfect volume and balance controls"Your Spectron amp has 50kohm input impedance at 26db of gain.These are a perfect match for each... 
Is no preamp really better that a good preamp?
Rustler hi, Please list your models of source and poweramp so we can let you know if you have a good impedance match to give you the best (most transparent/dynamic) sound.Cheers George 
Can one turn on a solid state amp without a load?
Only some tube amps have an issue with no load when being turned on.I believe the Model 5 is dc coupled, you need to monitor (with a meter) the dc offset on the amp. It could also be the source giving dc offset into the input.You could try to put ... 
ATC P1 amplifier
Even with balanced cables if the pre/source is capacitor coupled, the same bass roll off problem will occur if the cap is too small with the 10kohm input impedance of the amps. This is why I asked what pre/source is being used to drive the amp?Che... 
BRICASTI M1DAC DIRECT TO VAC PHI 300.1A OR...?
List458 hi, go direct (M1 to Vac) for the most transparent/dynamic sound. Your dac from it's se outputs has 2v output at a very nice low 29ohms output impedance, this is better than most preamps have to drive a poweramp direct with.Your amp (which... 
ATC P1 amplifier
50ft of interconnect!!!!! To try first without throwing money at this.Just as an experiment, move everything together to try just 1 or 2 meters of interconnect, see if that fixes your lack bass problem. And what preamp are you using? As your amps ... 
Dan D'Agostino Momentum amplifier- which preamp?
What source/s do you have David?Cheers George 
Tube Amp for Martin Logan Speakers
A simple way to hear what negative effects they have, is to put them on an amp that has no problem driving a speaker. Then you will hear what negative effects they have when they are in.In my view they are interim fix, to allow an amp that has pro... 
Pass XA 200.5 versus X-600 for MBL 101D
1985tqc hi, I would stay with the Parasound JC1's as being bi-polar output they can give more current than the Pass mosfets can. This is why MBL also use Bi-polar in both their big amps used to drive their top speakers. As the MBL's are 81db and h... 
Tube Amp for Martin Logan Speakers
I've had a pair of Zero's given to me, to me they are a band aid fix for an amp that not right for the speaker it's being use on, and the disadvantages far outweigh the advantages. Your far better off getting the right amp for that speaker.PS: I g... 
Tube Amp for Martin Logan Speakers
Yes Al and that why I say a Quad 57 is voiced around a low power low current tube amp, but with Martin Logan's statement: "Quote:However, it is important that the amplifier be stable operating into varying impedance loads: an ideally stable amplif... 
Tube Amp for Martin Logan Speakers
Here is a link to those Stereophile simulated speaker loads, as I said hardly as taxing as the ML's loads.http://www.stereophile.com/content/real-life-measurements-page-2#GhGr6lrCxHfPYcsl.97Cheers George 
Tube Amp for Martin Logan Speakers
Here is an Audio Research Reference 150 considered by many to be a tube amp with better drive than most.It's only being asked to drive 2.83v hardly taxing.Look at the black trace in the link, this is Sterophile's simulated (rather easy speaker loa... 
Tube Amp for Martin Logan Speakers
An amp like say a Krell or similar, will remain almost flat in it's response across the frequency spectrum. All you need to do is look at the simulated speaker load graphs of amps at 1/3 power on Stereophile to see what happens to them if they hav...