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Mark Levinson Replica Amp

Dialectic

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#21
Thank you very kindly, dear experts, for your most appreciated advice!

You saved me quite a bit of dough: I almost pulled the trigger on one of the ML clones. Glad I asked you first!

The Job INT (upgrade from 225?) looks interesting indeed. Just a couple of points: digital volume control, and no balanced input…

I am not familiar with class D designs: can they REALLY sound like class A (think PASS Labs XA series, e.g.)? Are they not equipped with SMPS? Are they capable of providing adequate power bandwidth? Anyway, this UK-based outfit, Nord, does offer a few models looking good on paper… Any first-hand listening impressions? And how do they compare in terms of price/performance ratio to the competition?

Please chime in!
Digital volume control and Class D amplification are two persistent audiophile bugbears.

Digital volume control, if implemented well, is completely transparent. It's likely possible but more difficult and expensive to achieve the same transparency with analog volume control. The IC solution for digital volume control in the JOB INT is probably fine. That said, because of the unusually high gain of Goldmund's JOB amplifier circuit, the JOB products are not a slam dunk; the gain seems to make them prone to hiss and grounding noise with most equipment.

Class D amplification can be fine, too. The three best speakers that I have heard--the Kii Threes, Dutch & Dutch 8Cs, and B&O BeoLab 90s--all use Class D amplification, and two of the three best systems that I have heard used Class D amplifiers (NCore amplifiers in one case, Pascal amplifiers in the other).

With these technologies, all depends on the implementation. The Nord amplifiers seem promising, but it's impossible to know without measurements.
 
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FrantzM

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#22
You can get a JOB made by Goldmund for under $2,000.
The Job Integrated , a complete system with DAC BTW, should be tested by our Esteemed, Courageous, Magnanimous (and darn it!!) SUPREME and ( I am not stopping) FEARLESS Leader .... or one of his fellow ASRists ... I couldn't help but post here a snippet from the 6moons review
Though analog in (pu) did show a small loss in quicksilvery directness like a very fine veil
 
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amirm

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#23
The Job Integrated , a complete system with DAC BTW and if I should be tested by our Esteemed, Courageous, Magnanimous (and darn it!!) SUPREME and ( I am not stopping) FEARLESS Leader .... or one of his fellow ASRists ...
This king is wealthy but at $2,000, he is too damn cheap to buy said unit on his own. :)
 

Dialectic

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#24
This king is wealthy but at $2,000, he is too damn cheap to buy said unit on his own. :)
If I hadn't sold my JOB 225 already, I would have sent it to you.
 

Dialectic

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#26
sliding even more in OT territory :
Why did you sell it?
The version I had was 115V only, and I moved to the UK for a period of time for work. I replaced it with an all-voltage Devialet.
 
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Frank Dernie

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#27
Thank you very kindly, dear experts, for your most appreciated advice!

You saved me quite a bit of dough: I almost pulled the trigger on one of the ML clones. Glad I asked you first!

The Job INT (upgrade from 225?) looks interesting indeed. Just a couple of points: digital volume control, and no balanced input…

I am not familiar with class D designs: can they REALLY sound like class A (think PASS Labs XA series, e.g.)? Are they not equipped with SMPS? Are they capable of providing adequate power bandwidth? Anyway, this UK-based outfit, Nord, does offer a few models looking good on paper… Any first-hand listening impressions? And how do they compare in terms of price/performance ratio to the competition?

Please chime in!
The Job INTegrated is based on a different Goldmund model from the 225, so not really an upgrade (probably slightly lower spec actually but you get a preamp and Dac for the same price).

Job is the pro division of Goldmund (they bought Job just over 20 years ago to obtain their IP)
Nowadays Job equipment is effectively Goldmund in a very much less expensive case often with a slightly simpler power supply and supplied direct so no distributor or retailer margin.
Goldmund always recommended single ended connections over balanced in their kit, though they don't any longer, but that could be pandering to fashion.
I don't see why any competently engineered SMPS should harm the performance of any other competently engineered elements of a hifi system. Maybe there is too much badly engineered stuff about?
 

amirm

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#28
Job is the pro division of Goldmund (they bought Job just over 20 years ago to obtain their IP)
Thanks. I was wondering what the deal was.
 

Dialectic

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#29
The Job INTegrated is based on a different Goldmund model from the 225, so not really an upgrade (probably slightly lower spec actually but you get a preamp and Dac for the same price).

Job is the pro division of Goldmund (they bought Job just over 20 years ago to obtain their IP)
Nowadays Job equipment is effectively Goldmund in a very much less expensive case often with a slightly simpler power supply and supplied direct so no distributor or retailer margin.
Goldmund always recommended single ended connections over balanced in their kit, though they don't any longer, but that could be pandering to fashion.
I don't see why any competently engineered SMPS should harm the performance of any other competently engineered elements of a hifi system. Maybe there is too much badly engineered stuff about?
In the past, Goldmund marketed Stellavox as its pro division. Stellavox made small reel-to-reel tape recorders reputed to be a bit better than Nagra's before Goldmund bought the company and used the brand to market JOB-circuit amps and lightweight preamps to professionals.
 

Frank Dernie

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#30
In the past, Goldmund marketed Stellavox as its pro division. Stellavox made small reel-to-reel tape recorders reputed to be a bit better than Nagra's before Goldmund bought the company and used the brand to market JOB-circuit amps and lightweight preamps to professionals.
Indeed.
I have a StellaDAT which is a most exquisitely made thing. I made some superb recordings on it back in the day. Sadly it seems to have lost its boot up programme possibly because I left the battery on it and it went flat.
They do indeed use the Stellavox name for the pro products but they sold part on to a company who wanted to continue making the recorders and since then they went back to the Job name for direct sales and the Stella stuff is via dealers and more like rebadged original Job.
The first Job amp, pre Goldmund, was a simple box with a 10 turn volume pot on the front. I remember hearing one at Station 2001 in Mantes-la-Jolie in the mid 1990s.
All subsequent Goldmund, Stellavox and Job amps used the Job circuit afaik and maybe still do.
I have a pair of Mimesis 29.4 amps which weigh 65kg each and haven't been used or moved in years! Back then all Goldmund's larger power amps had the same main circuit board, iirc just with more output devices and bigger power supplies as you went up the range.
I haven't used them since I bought a Devialet D-Premier but the Job is a good choice for me since it is small and light so I can use it anywhere..
 

Sir Sanders Zingmore

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#31
I am not familiar with class D designs: can they REALLY sound like class A (think PASS Labs XA series, e.g.)?
As a single data point (for what that’s worth), I have a Devialet 120 (some kind of hybrid class D with class A). I also have a Line Magnetic 219ia (a stonking beast of class A inefficiency).

I did a blind test between them and couldn’t tell them apart..... go figure
 

Krunok

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#32
As a single data point (for what that’s worth), I have a Devialet 120 (some kind of hybrid class D with class A). I also have a Line Magnetic 219ia (a stonking beast of class A inefficiency).

I did a blind test between them and couldn’t tell them apart..... go figure
My setup is to some point similar to yours: I have Rotel RMB 1075 (deployed as 140W stereo amp with 660W power supply) and Audio Aero Capitol (tube amp, 50W in class A). In a blind test I can't tell them apart as well.

Your Devialet 120 is a state of the art of modern technology and I admire it as an engineer, but I probably couldn't be able to tell it apart from a decent $1000 amp in a blind test.
 

sergeauckland

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#33
My setup is to some point similar to yours: I have Rotel RMB 1075 (deployed as 140W stereo amp with 660W power supply) and Audio Aero Capitol (tube amp, 50W in class A). In a blind test I can't tell them apart as well.

Your Devialet 120 is a state of the art of modern technology and I admire it as an engineer, but I probably couldn't be able to tell it apart from a decent $1000 amp in a blind test.
And why would you? If the decent amplifier is decent enough for transparency, then any other similarly decent (hence transparent) amplifier will be indistinguishable. If two amplifiers are distinguishable, then one or both can't be transparent.
S
 

Krunok

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#34
And why would you? If the decent amplifier is decent enough for transparency, then any other similarly decent (hence transparent) amplifier will be indistinguishable. If two amplifiers are distinguishable, then one or both can't be transparent.
S
I cannot agree more.
 

TBone

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#35
My setup is to some point similar to yours: I have Rotel RMB 1075 (deployed as 140W stereo amp with 660W power supply) and Audio Aero Capitol (tube amp, 50W in class A). In a blind test I can't tell them apart as well.
I had similar Rotels, forget the model#, rated 150w. Also bridged 2 into mono for a time. Then a really nice SIM 250w amp, and a 150w ATI (SAE roots). The ATI was a real surprise, intended as a temp, I lived with that amp for many many years without ever feeling the need for change. It may have been the least costly amp out of the bunch, iirc ~$700, but of all my old amps, I remember that little tank of an amp most fondly. (gave it to a close friend who abuses it daily)

A pair of mono 100w Classe DR3's have since long graced my system.[/QUOTE][/QUOTE]
 

Krunok

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#36
I had similar Rotels, forget the model#, rated 150w. Also bridged 2 into mono for a time. Then a really nice SIM 250w amp, and a 150w ATI (SAE roots). The ATI was a real surprise, intended as a temp, I lived with that amp for many many years without ever feeling the need for change. It may have been the least costly amp out of the bunch, iirc ~$700, but of all my old amps, I remember that little tank of an amp most fondly. (gave it to a close friend who abuses it daily)

A pair of mono 100w Classe DR3's have since long graced my system.
[/QUOTE][/QUOTE]

Easy to understand as Classe DR3 is a beautifully designed amp for which I'm sure it plays extremely well. :)

Btw, my Rotel RMB 1075 is not bridged. At that time Rotel started to manufacture TXH certified amps for AV use but internally it has been built of 5 identical mono blocks - the same ones they were using inside stereo amps. Nominal power is rated at 5 * 120W, but when only 2 channels are driven the output raises to 140W thanks to it's power supply consisting of 1.5 kVA toroidal transformer and 8*10.000 µF slit-foil capacitors. MSRP was $1200, which I found reasonable for such amp. I was so impressed with it's ability to play consistently whatever you throw at it that I decided to keep it. It's been with me now for 15 years. :)
 

Blumlein 88

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#37
I had similar Rotels, forget the model#, rated 150w. Also bridged 2 into mono for a time. Then a really nice SIM 250w amp, and a 150w ATI (SAE roots). The ATI was a real surprise, intended as a temp, I lived with that amp for many many years without ever feeling the need for change. It may have been the least costly amp out of the bunch, iirc ~$700, but of all my old amps, I remember that little tank of an amp most fondly. (gave it to a close friend who abuses it daily)

A pair of mono 100w Classe DR3's have since long graced my system.
Yes, I once owned some Classe DR3 VHC amps. Very nice. I also had some Classe 25 amps. A pair of 25's bridged will play Soundlabs very nicely as they should at 1 kwatt per channel. Yet my Wyred4Sound ST500 is better.
 

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