anyone here experience with Jeff Rowland Model 102

Kijanki,

thanks for post.

out of curiosity, what pre-amp are you using with these ?

Are you using the balanced interconnect for these amps ?

What speakers have you driven them with ?

Appreciate your inputs.

I am using Benchmark DAC1 (has only digital inputs and built in volume control) with 0.5m AQ King Cobra XLR. Drive Paradigm Studio 60v2 (with improved Xovers)using 6' Acoustic Zen Satori Shotgun. Paradigms are the weakest link now. "Digital" amps are in a sense not involving - as my DAC is not involving (appears at first). Benchmark is designed to supress (-40dB) jitter. Jitter from transport causes small amount of side bands (about -85dB at 3ns) very audible since not harmonically related to base frequency. Lack of "fuzz" in the sound made at first impression of missing instruments - sounded too clean (still very dynamic). Similar thing with Rowland - strong highs but no glare (no intermodulation distortions common in SS amps) - very smooth and clean. It is very good amp for the money. Older bad sounding "D" class amps were digitizing with limited resolution. ICEpower is purely analog with unlimited resolution. Very high damping factor droping to 1000@1kHz makes tube amps with poor damping sound blooming at the midrange. Tubes sound nice but similar to wearing yellow sunglasses - nice view but not real (again who knows what is real?). I had to tame Paradigms metal dome tweeter wit L-Pad (and upgrade Xover)- not because of glare from CD but from HDTV (toslink). Now is a little opaque with CD but warm and nice. 200ASC module has only about 1 degree phase shift difference 100Hz-20kHz. Phase changes between channels are probably small fraction of a degree - resulting in nice soundstage with instuments clearly positioned and more of the 3D quality. Hope it helps.

Thanks for the insight Kijanki.

Before you settled on the Model 102, did you give the PS Audio digital amps a listen ?

A similar model called PS Audio Trio A100 $1000 seems to exist. I heard one recently and was quite impressed.

To be frank I did not listen to any of the components I currently have or others. I read tons of reviews and user opinions instead. I decided that each component is dependand on the others and listening to only one is not useful. I started picking selection starting from the source and after almost buying used Ayre CD player I decided I want to have my TV and DVD also connected by digital interface. I bought Sony DVD player and Benchmark DAC1. That was easy choice (saved a lot of money on transport+DVD sound). AQ King Cobra was known before a Python and was expensive. AQ in order to be competitive moved production to China and slashed the price changing cables name. Now you can buy used one (0.5m) for $50 (no brainer). I intended to buy Bel Canto S300 for its glowing reviews but Rowland has great reputation (in 20 years released only great products) and it was cheaper then (forced Bel Canto to lower price). Satori Shotgun is expensive $1100 (bought used) but is probably the best choice for lean sounding system (slight lower midrange emphasis). Replacing everything with fairly neutral sounding components makes life easier in future. Now I have time to research speakers. Acoustic Zen Adagio with underhung speakers and ribon tweeters is one of possibilities.

PS Audio had good reviews in Stereophile - at least integrated amp but is over my price range. Red Dragon Leviathan (based on 1kW ICEPower) is one of the better digital amps as well as one called H2O - both well above my spending limits. Rowland's 201 and 501 monoblocks are great but again expensive.

Robert Lee the founder of Acoustic Zen presented his Adagio speakers this year connected by his cables (of course) to Red Dragon amps. He is perfectionist (Zen Buddist)and he thinks Red Dragon is the best.

Warning about didital amps - they often require very long break-in. My Rowland started sounding decent after 200hrs but after 400hrs sounded fuller. It is still changing (I bought it in April). It is releated to glues and varnishes on inductors and transformers that are drying long time in cool running amp.

Kijanki, thanks for the info.

Wow, that is a long break in time!!

Is it also true that the amp can take a wide variety of fluctuations and still sound good unlike conventional amps ?

I've never heard of rowland gears but judging from the way they look and the way they are reviewed, they seem well reputed and well made.

In your opinion, in terms of durability how do you feel about these digital amps ?

Thanks again.

Noli