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  New Rowland Criterion 2-chassis battery pre
Jeff Rowland Design has just created a page for its upcoming statement-level, twin chassis, battery powered full function preamplifier. Detail is still scant, but a little bit of info is already available, in addition to front and rear view pics. Here’s the page:
jeffrowland.com
And here’s the front view:
jeffrowland.com
And here’s the rear view:
jeffrowland.com

You will find a few specs already on the site. JRDG should be publishing more info in the next few weeks. I will post here as I receive it. in addition to the published specs that you can read on the page above, here are a very few additional tidbits that I have learned this far:

. Uses Burr Brown TI OPA1632 high speed fully differentially balanced modules.
. Includes phono stage.
. Uses standard NiMH D-cell batteries available in most electronics stores, loaded in 2 rear-inserted tubes of power supply chassis.
. Capable of AC/DC operation . . . will recharge batteries on independent circuit during AC operation.
. Full remote control
. Target price $18K (not sure yet)
. Availability: probably early Fall 2008.
. Will be featured at RMAF in Soundings Hifi suite Marriott 503 or 505 from Oct 10th to 12th in Denver.

And sorry folks, I have not heard this device yet. Nor I have any good third party reports on its sound. Any speculations on Sonics from my part would be just. . . pure speculations. I’ll keep everyone posted as I learn more.

Guido
Guidocorona  (Threads | Answers | This Thread)

07-21-08
  Responses (401-450 of 472)
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01-15-10   I have a pair of the latest 301´s and also very interested t ...   Cappuccino

01-15-10   Cappuccino, what design/sonic differences are there in the ...   Guidocorona

01-16-10   "very sensitive to other equipment and cabling" c ...   Clavil

01-16-10   Guidocorona, i believe it is the same difference as for the ...   Cappuccino

01-16-10   Cappuccino, in that case the more recent 301 batches must be ...   Guidocorona

01-16-10   Cappuccino, not sure if i or someone else has asked you this ...   Kawika

01-17-10   Kawika, unfortunately i have no experience with the criterio ...   Cappuccino

01-17-10   As i have the model 312 for only 1 year, i can keep it until ...   Brazcole

01-17-10   Braz, the 'device' is a power rectifier based on a technolog ...   Guidocorona

01-17-10   I should be the envy of all of you. i use a capri preamp, a ...   Macrojack

01-17-10   Macro. . . i am glad that your case of audiophrenia is milde ...   Guidocorona

01-17-10   Guido - one of my symptoms is contentment. when i received ...   Macrojack

01-17-10   I also have a 501 that i use for my center channel. it impro ...   Cappuccino

01-17-10   Yes, audiophrenia being the most virulent known form of audi ...   Guidocorona

01-17-10   Hi guido, can you describe the volume control technology use ...   Mark_nz

01-18-10   I also have a 501 that i use for my center channel. it impro ...   Clavil

01-18-10   Mark, here is what i know about the control knob on criterio ...   Guidocorona

01-18-10   Ok, let me explain more in detail. this is how my 501 amp fo ...   Cappuccino

01-18-10   Thanks   Clavil

01-18-10   Thank you guido re the description of the volume control. th ...   Mark_nz

01-18-10   Mark, criterion uses large scale integration for its optica ...   Guidocorona

01-26-10   All, it looks like our criterion and related products thread ...   Guidocorona

01-26-10   Guido, it looks like the corus production is 4 mos out. is ...   Husk01

01-27-10   http://blog.stereophile.com/ces2010/jeff_rowland_design_gro ...   Clavil

01-27-10   Husk, i'll know more about corus product availability in th ...   Guidocorona

01-28-10   Some more pictures   Clavil

02-02-10   Found more pics of the new jrdg gear at: http://positive-fee ...   Guidocorona

02-06-10   Nice pictures of ces guido. thanks for the link! i took my c ...   Kawika

02-06-10   In my loudspeakers the low frequency of my 312 is hair-raisi ...   Brazcole

02-06-10   David, i do admit freely that there are a lot of amps with ...   Guidocorona

02-07-10   Guido, did you get a delivery date on the corus yet?   Husk01

02-07-10   No, i have no delivery date on corus yet. i will check agai ...   Guidocorona

02-07-10   Love the one you're with. corus anticipation could be a leng ...   Macrojack

02-08-10   Yes how true guido. i died a thousand times waiting for the ...   Kawika

02-09-10   Have you compared it to fm acoustics or viola ?   Clavil

02-09-10   Or burmester 077 which i use with mye 301´s?   Cappuccino

02-09-10   I have not had the opportunity of performing a side-by-side ...   Guidocorona

02-10-10   Oh yes! ... but strangely these kind of tests seem to be v ...   Clavil

02-10-10   I personally have never heard fm acoustics preamp ... i kn ...   Clavil

03-05-10   Any new updates on the corus?   Kclone

03-06-10: Guidocorona
Hi Kclone, I will buzz the factory on Monday and will post what I hear from them. Guido 
Guidocorona  (Threads | Answers | This Thread)


03-08-10   Kclone, i have just checked with the factory, and corus has ...   Guidocorona

03-16-10   I just got off the phone with kelly @ jrdg. corus is without ...   Macrojack

03-17-10   Sourcing? g.   Guidocorona

03-17-10   Yes, guido, sourcing. none of the parts in a rowland product ...   Macrojack

03-17-10   Macro, did you mean. . . my kingdom for a 'source'..... (g ...   Guidocorona

03-29-10   All, here is a correction to information i have posted earl ...   Guidocorona

04-11-10   I try my gamut 200w power amplifier in biamp driving the hig ...   Brazcole

04-11-10   Hi braz, final model 625 power ratings and related tech sp ...   Guidocorona

04-12-10   Brazcole, you should be careful if you plan using different ...   Cappuccino

04-12-10   Thank you, cappuccino i was thinking it was something like ...   Brazcole

06-20-10   Guido, what's up? i think everybody is waiting for more wor ...   Brazcole

06-21-10   And what about the chorus ?   Clavil

06-21-10   Hi braz, my criterion is doing very well and it's making wo ...   Guidocorona

10-27-10   There is now a jrdg faq in beta state. the criterion sectio ...   Guidocorona

05-09-11   Guys,,, on my criterion i often have to turn it up to 80+ to ...   Jacksonkuo

05-09-11   Jackson, turning up volume to about 80 or more is normal on ...   Guidocorona

05-10-11   Guido, would that also be true for the corus?   Husk01

05-12-11   Husk, i have no direct experience with corus. however, cor ...   Guidocorona

05-13-11   The corus and criterion are essentially the same preamplifie ...   Mark_nz

06-29-11   Here is very enthusiastic review of the corus: http://hifi- ...   Mark_nz

06-29-11   It seems that the criterion will be replaced (upgraded?) by ...   Clavil

06-30-11   Claude, i have heard such an unconfirmed rumor as well .... ...   Guidocorona

07-01-11   Guido i have heard also that the next amp to come out also ...   Clavil

07-09-11   Could anyone compare the corus and (actual) criterion side b ...   Breezer

07-09-11   Hi claude, your info and my own coincide .... i also heard a ...   Guidocorona

10-26-11   Hi to the forum, has any jeff rowland criterion owners notic ...   Ianbodill

10-26-11   Rowland ships criterion with 4 delrin balls that connect the ...   Guidocorona

10-26-11   Hi guido, yes i have used the delrin balls supplied and have ...   Ianbodill

10-26-11   Ian, try to determine if perhaps one of the seats for the ba ...   Guidocorona

10-26-11   Thanks guido, will do. ian   Ianbodill

12-26-12   All, it looks like criterion is no longer shipping. the curr ...   Guidocorona


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