I see 3 inductors, 3 ICs (two with heatsinks as mentioned), two relays, and a bunch of R and C. This does not look like it could be all that wideband as is alleged.
I'm pretty sure it sounds o.k. 🙂 Price is steep.
I must say, that no matter if we find more to this unit, it is OVERPRICED! Now, how can I say this? I make stuff equally or even more costly, so who am I to agree with the rest of you?
Well, look at it, count the parts, the build quality, etc.etc. It just isn't there. Parasound sells something nearly equal in chassis construction and certainly in parts quality for $2300, so this phono stage appears to be priced about 5 times over its general worth in the marketplace. It is unfortunate when this happens, but it does.
It is like when, decades ago, GM 'tarted' up a Chevy chassis and called it a Cadillac. People, knowing that Cad's used to be a completely different, better design, revolted, as they well should have, and GM dropped their attempt.
I hope people will see through this attempt to overcharge the public with a 'cheap to make' component.
Well, look at it, count the parts, the build quality, etc.etc. It just isn't there. Parasound sells something nearly equal in chassis construction and certainly in parts quality for $2300, so this phono stage appears to be priced about 5 times over its general worth in the marketplace. It is unfortunate when this happens, but it does.
It is like when, decades ago, GM 'tarted' up a Chevy chassis and called it a Cadillac. People, knowing that Cad's used to be a completely different, better design, revolted, as they well should have, and GM dropped their attempt.
I hope people will see through this attempt to overcharge the public with a 'cheap to make' component.
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I thought the exact same thing.
That must come in one hell of an enclosure.
Not totally surprising though. You can tell people what they hear. You can spoon-feed them hyperbole, group think and manufactured concensus and they'll buy it.
I assume it's one channel. The pinout on the unheatsunk IC makes sense, looks like some inverting connection with diode clamps to the rail. What's REL2?
Perception sells.
Parasound could repackage the JC-1 in a nice, heavy, machined hunk of aluminum and call it the John Curl Signature edition and sell it for 3-5 times the price.
It'd sell too.
Parasound could repackage the JC-1 in a nice, heavy, machined hunk of aluminum and call it the John Curl Signature edition and sell it for 3-5 times the price.
It'd sell too.
All in the eye of the beholder:
soulution 720/721 preamplifier
Looks more like a cash register or older gas pump to me but they claim to have gotten design awards for it.
Attachments
Mmm, no, that doesn't do it for me. At least they heatsinked 2 of the 8 pin dips.
I don't think we could 'improve' the JC-1 that much to make it sell for $25,000, but I could design something that could. And LOOK at what you get with a JC-1, the quality of the components, (no IC's in the audio path), the fit and finish, as well as the heat sink area. And we ONLY charge $9000 a pair, '-).
Agree with John and Scott, one channel. REL2 looks like a reed relay of some sort, for exactly what I have no idea.
Oh, there it is, "the volume can be adjusted without clicking noises".
Which I read as some type of degradation thru whatever chip vol. control they use.
Which I read as some type of degradation thru whatever chip vol. control they use.
The inductors are also in each of the input stages after the three inputs, so six times total for stereo, part CM types.
The Burr Brown without a heatsink could be a servo.
(the coil addition referred to both the number of inductors, plus the ample use of Hamlin reed & NAIS relays, plenty of the both of them residing under the 720 boards i posted )
A Boulder 2008 costs more, in TAS's view also kick's butz, but after a decade they likely needed something new for them to not look old
btw : the 720 phono boards are used in both the 720 preamp and the 750 phono stage. At $25K/€34.9K retail i'd expected at least a separate batch with 750 print.
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Here the slew rate is given as "400ns". Although I'm more familiar with furlongs per fortnight.
Thanks,
Chris
I see I lifted the wrong spec for slew rate: it's claimed as 400V/ns for the phono preamp (330V/ns was for the power amp). I would also suppose from the specifications in Valin's text that the cited 100dB S/N ratio is with the input shorted. I'd like to know what it measures open.
So, are there enough reed relays in other parts of the circuit to make them the plausible switches for gain control?
So, are there enough reed relays in other parts of the circuit to make them the plausible switches for gain control?
Out of curiosity, just how long have you been into audio electronics ?
Provided you can Reed : http://img.photobucket.com/albums/v53/eliot/sommar09/hr09-084b.jpg
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