Are there ANY Plinius SA-250 MKIV owners around?

Hi Sutts,

I saw your previous post regarding the SA 250Mk1V vs. Bryston 14B SST, but because I own the SA 250(not Mk1V) and haven't heard the Brystons..I felt my comments would be of no use to you. I can only comment on the sound of my SA 250 amp and would generally agree with most who find the Plinius sound tubelike smooth and refined. I have mine mated to an ARC LS15 and B&W Matrix 801 S2's, with the modified Van Alstine X-over mods.. I run balanced Transparent cables to the amp and feel this is superior sounding to my older MIT 350 Refs RCA.

I have owned the SA 100 MkII prevoiusly before upgrading to the 250, and the 250 is quite a substantial step up sonically. I dont have quite the bloom and euphoric sound as some have mentioned, probably due to the LS15 being more dry than warm overall. However, That suits me perfectly, especially with the already warm mids and laid back tweeter of the 801's. To my ears, the SA 250 is rather neutral and exceptionally well balanced. Bass is superior to the SA 100 or 102 series amps, and the tubelike mids are kept intact. Something that the 100 and 102 do very well.
What the 250 does so well and better than any amp Iv'e had the pleasure to own(incl. some nice ARC tube monos) is tonal correctness, excellent depth front to back and an expansive soundstage that has superb inner detail without being forward, and stays focused and together when pushed. My tube amps lacked that ability. It is very musical for such a powerful(and BIG) amp. It may not be the last word in bass slam for sure..but it does VERY well on my 801's which at times seem like they are mated to a sub on certain passages in the recording. something my old 100 didn't do. A very solid low end foundation with this amp.
Just a quick mention...I emailed Peter Thomson at Plinius NZ. several weeks back for a copy of the manual. He was very helpfull. He gave me the details of the different iterations of the 250/MkII/MkIII and IV. Basically the MkII and III versions add some changes to the internal wiring and cabeling. and the Mk IV is a whole different amp both internally and with so many changes, there is no upgrade path from the orig. 250 amp. He felt the sonic signature was very close however and that the changes were more for ease of use and easier service by the company. This.. FWIW to you. Hope this helps somewhat. :) Ken

Saltyflies- my speakers are large, 200lb. 9-driver design, yet fairly high efficiency (97db) Coincident Total Victory with ribbon tweeter. They are very revealing, yet also go down to 28hz, and actually like a bit of power, yet problematic, in that I have found they will reveal deficiencies in an amplifier (HP @ Absolute Sound agreed in his review of the TV's). Given that, and from what I can see from your post, it sounds like the refined, yet slightly warm Plinius may be a great match.

As for the Bryston, you really have to hear the newer SST series- quite refined, and sonically a definite step up from the older ST series.

Re: your comment on preamps- very interesting. Mine is a modified Sonic Frontiers Line 3, which is very neutral/dynamic, which also seems to fit the bill according to your experience when you tried the ARC LS-25.

Thanks again, excellent info and some great thoughts on component synergy. One other question- have you played around with any different types of interconnects with the SA-250MKIV? I am looking for a recommendation for a great XLR IC with the Plinius amp...

Ken- an excellent post. That is great information, and interesting how you and Saltyflies are both using ARC LS-series preamps- coincidence?

The description of the sonic subtleties you have found with the SA-250 is exactly what I am looking for, and it's great that it's worked out so well for you. When anyone finds a SS amp that actually replaces a very good tube amp in their system, I definitely take notice- thanks again for sharing your experiience...

Kehut – Sorry about the overly euphoric comment. FWIW, I don’t post much about specific products because of the synergy thing and only ding products that I really like.

Sutts – Can’t help with cables. Aside from what I’ve read…I think your speakers are more revealing, easier to drive, less dynamically challenged than mine. Since you already have a dry, dynamic preamp - you may not have the PRAT or personal preference issues that I had. If you like the Plinius cold, you gotta hear it with 2-3 hrs of warm-up – no more brittle highs, coarse, grainy textures, fuzzy imaging, etc. The highs with ribbon tweeters esp. cymbal attack, shimmer, decay are incredible. Vocals are smooth and buttery. Bass is full, deep and powerful – could be tighter with more slam imo. Anyway, try borrowing one and get help moving it, watch out for the corners - sharp vertical heatsinks and front handles are useless- transformers are in the back.

Saltyflies,
No need to apologize, but thanks.Im sure any given component may sound very different with other associated equipment.You only commented correctly on what you heard, no harm in that.

Sutts-
I definately agree with Saltyflies here. Run dont walk to find the SA 250. Buy it and you wont look back! I think its that good myself. But once you get it home..have some help with its set up. and do take care of its heat sinks fins from damage as it is heavy! Enjoy! and all the best!-Ken
PS....Im on the lookout for a nice LS25 if anyone has one to sell!