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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 (201-250 of 472)
Click title to read one, or click date to read all below it.

05-13-09   All, i tried to hunt down the address of the munich show on ...   Guidocorona

05-13-09   Will the crterion be operating with a remote?   Husk01

05-14-09   I suspect criterion at munich might have an operational remo ...   Guidocorona

05-14-09   I have just had confirmation from the jrdg factory that the ...   Guidocorona

05-22-09   Yes, but was the reciver fully programmed?   Kawika

05-22-09   Hi david, what i meant is that as far as i know the criterio ...   Guidocorona

06-15-09   The jrdg dealer in rio just call me. they have received the ...   Brazcole

06-15-09   Congratulations brazcole. you will likely receive 2 milled ...   Guidocorona

06-16-09   Guidocorona, the brasilian dealer for jrdg is located in sou ...   Brazcole

06-16-09   That's great brazcole. right now firmware upgrade is done ...   Guidocorona

06-19-09   You're right, guidocorona. i got the remote control, the rec ...   Brazcole

06-20-09   Brazcole, i am new to remote controls. until a couple of ye ...   Guidocorona

06-20-09   Congratulations, guidocorona, for your criterion. that's gre ...   Brazcole

06-20-09   Thank you so much brazcole, i am in fact quite excited. i'l ...   Guidocorona

07-09-09   My criterion has undergone final testing and battery charge. ...   Guidocorona

07-09-09   I have visions of snoopy dancing...anticipating the ecstacy. ...   Dcstep

07-10-09   Why not write the review now guido while you have some extra ...   Audiofeil

07-10-09   07-10-09: audiofeil said: "why not write the review no ...   Dcstep

07-10-09   My business is terrific right now dave. not many retailers ...   Audiofeil

07-10-09   "rah rah rah, siss boom bah" thank you for the s ...   Guidocorona

07-12-09   The main theme of bruckner 4th ? ... nice choice ;-) congra ...   Clavil

07-12-09   Received an automated call from ups. . . my criterion will b ...   Guidocorona

07-12-09   Hmmm, hi clavil. . . it looks like the gentleman with the ol ...   Guidocorona

07-12-09   Did ups extenze his signature pad or twas bruno with his sil ...   Dgarretson

07-13-09   If it hasn't arrived yet, look at the bright side. it give ...   Audiofeil

07-13-09   Oooh. audiofail, you just glow with a supremely bright shade ...   Kawika

07-13-09   Guido, from your posts i know that you hold much of your imp ...   Philb7777

07-13-09   Thank you phil and all. it looks like. . . the criterion ha ...   Guidocorona

07-13-09   Guido, i don't expect you to remember me but we talk on the ...   Bobheinatz

07-13-09   Hi bob, great hearing from you. . . of course i do remember ...   Guidocorona

07-14-09   Guidocorona, i'm happy that you have received your criterion ...   Brazcole

07-14-09   Thank you brazcole, what i said was the contrary of what ...   Guidocorona

07-14-09   Where's the review of the olds cornet??? dave   Dcstep

07-14-09   O shucks dave, the cornet never arrived. . . do you think i ...   Guidocorona

07-15-09   And the olds coronet will never arrive as coronet was made b ...   Audiofeil

07-15-09   Bill, you are so right of course, i suchly confess that i kn ...   Guidocorona

07-15-09   Bill's royal self image has him confusing a coronet with a c ...   Dcstep

07-15-09   In other words bill, for your private edification, the link ...   Guidocorona

07-15-09   Btw guido, three working valves will be enough for all but t ...   Dcstep

07-15-09   I could say i'm a intermediate level audhiophilo, but i'd li ...   Brazcole

07-15-09   Thank you brazcole, kimber could be interesting.. . but ever ...   Guidocorona

07-15-09   Brazcole, thanks for your report. as you've discovered, the ...   Dcstep

07-15-09   Getting back to topic. . . it's time for a brief update at a ...   Guidocorona

07-15-09   I'm curious: what is the interconnect between the battery/p ...   Jimjoyce25

07-16-09   Jimjoyce25, there are 2 12inch pigtails connecting the contr ...   Guidocorona

07-16-09   If you have other cables that will carry the dc power, it wo ...   Jimjoyce25

07-16-09   Jimjoyce25, i have no doubt that a different power&data pigt ...   Guidocorona

07-16-09   Yes, no question that any comparison should wait until break ...   Jimjoyce25

07-16-09   Thank you jimjoyce25, what i have found out is that switch ...   Guidocorona

07-18-09: Guidocorona
At approximately 126 hours into the break in process it is worth while that I post a brief update.

The sound of Criterion continued to open up and to relax until about 85 hours of playing time. . . I was starting to hear a considerable amount of ambient cues. Without the sound ever venturing far towards the warm sound of neutral, performances were becoming more and more textured and emotional. I was very pleased by the amound of harmonic content, macro and micro dynamics, and immunity from distortion in loud passages.

At approx the 90 hour mark, sound turned markedly toward surfacy, pinched, harsh, and brittle. . . Violins became steely and whyny, piano steely and shallow. . . detail gone out the window. . . ambient cues no where in sight, micro dynamics an alien concept. Seems Criterion is not at all immune from the dreaded break-in doldrums. This morning, at approx 115 hours, the creature was definitely still in a bad mood.

Sometimes in the late afternoon things started to open up once again. Now, at about 126 hours, the sound has reopened up considerably, if not to the point where it was a couple of days ago. . . music is becoming enjoyable once again. Can't help being anxious. . . patience is a lot easier to preach than to practice.

G.

Guidocorona  (Threads | Answers | This Thread)



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