Parasound A21+ vs MF M8 500S vs Cary 200.2 ES vs Hegel H20

So you feel the Rogue ST100 lacks "excitement"! Get a Crown XLS 1502. Plenty of power - and lots of Class D "excitement"! $449!

Thanks jasonbourne52, a bargain would be great but from my reading the Crown is great value for money but doesn't play at this level.

There’s a McCormack DNA 0.5 with Steve McCormack’s Ultra mods on US AudioMart for $2000.  Jump on it!  And you can have Steve do even further mods down the road if you want even more or ever get the itch. 

Thanks Soix. 

In order not to make the OP even longer, I didn't mention that I'm actually in Oz and am looking at the amps mentioned because they are more readily available here and I could probably get to hear one (though perhaps not in my system) before buying. Buying on Audiogon or US AudioMart is possible but would need to be 240v (or switchable).

Have you compared the DNA to any of the amps I shortlisted?

Thanks guys,

My room is larger at about 19x22x8 and the corner behind the listener's right shoulder is open to a long hallway and an open staircase. Speakers are 9' apart and I sit 12' from each speaker. Speakers are toed in half way between straight-ahead and at-the-listener and over the years I've found this to be the best setup. Baffles are approx 4' from the wall behind and the wall is 4' behind my head. Room is acoustically treated and nicely balanced. I don't listen to metal or at ear bleed levels but like to listen at a volume that gives the impression of a live performance.

I should emphasize that I'm not looking for a paradigm shift in the sound, we are talking fine tuning here. The current setup sounds great and 3D and organic etc but the higher powered solid state integrated amps I mentioned brought the system "alive" with more zest and vigour. The current system sounds slightly polite in comparison.

I'm just seeking a little more zest, sparkle, punch and slam. Imaging is already fine but I feel like I'm "seeing" the live performers in the room in front of me (i.e. from speakers back) but I'm not quite feeling immersed in the live performance. Sorry, I'm not sure how to explain this better.

I'm not sure if it was the higher current provided by those higher powered SS amps that "woke the system up" or a more extended top end or both. It is almost like the system is too polished and needs a little edge or crisper leading edges.

Tvad - You may be right about the Pass amps as they may provide higher current than my Rogue and perhaps greater transparency. But, I don't want a physically big, industrial looking and hot amp (it is not a dedicated music room or man cave). Many years ago I had a Plinius SA100 mk3 amp, but not with these speakers. It would have been interesting to hear it with these speakers although it too was big, hot and ugly.

Unison77 - you have obviously used a range of tube amps with these speakers and apparently not suffered the "politeness" issue that I'm trying to address. This makes me wonder whether I should try to borrow another pre-amp to discount it as being the culprit (although I recently re-tubed it) as I've used it for about 10 years now.

I know the speakers are fine as they came alive with zing and punch with the higher powered SS amps. 

I appreciate your input, please keep it coming.

@desferous - Thanks for the suggestion re the Kinki separates. My concern is that Kinki describe the EX-M7 as "essentially a beefed up EX-M1" and I don't know whether the issue I heard with the EX-M1 was due to the pre-amp stage or power amp stage (most people don't seem to hear it).

@avanti1960 - Wow, awesome feedback from somebody lucky enough to have owned/heard a number of the options I’m looking at. Thanks for taking the time to detail your experience, very helpful indeed.

I have run the ST100 in both triode and ultralinear mode and always on 8ohm taps but only SE input as the Herron doesn’t have balanced outputs. I’ve briefly tried the high gain setting on the Herron but it didn’t seem to make much difference once volume matched.

Based on your feedback re the excellent dynamics of the ST100 (especially with balanced connection) and the feedback from @unison77 that several lower wattage power amps happily provided sufficient dynamics from the Sonata III speakers, I’m now even more convinced that I need to try a different pre-amp and preferably a balanced one to determine whether it is the Herron or the SE inputs of the ST100 (or both) that are causing the perceived lack of dynamics.

You mentioned when using the RH-5 and ST100 together with balanced connections, "the sounds just popped" and that is probably a good description of what I am missing. To be honest I hadn’t really thought that pre-amps would make that much of a difference to dynamics (versus power amps), especially when I’m using a pre-amp of the class of the VTSP-3. But now I need to investigate this.

You also mentioned that the A21+ "sounds hesitant" compared to the ST100. I was wondering what speakers (sensitivity/impedance) this was on and whether overall you prefer the ST100 or the A21+?

the hegel h20 is outstanding (and superior to the parasound) ...

@jjss49 In what ways did you feel that the H20 sounded better than the A21+? 

...  but even if you like extra power it may be overkill for your silverlines

"Overkill" for the Silverlines in terms of power or cost? 

@avanti1960  and @jjss49 
Thanks for your feedback and suggestions, good information for me to digest as I consider the next step.

I noticed that like me, Herb Reichert (Stereophile reviewer) was using both the Holo Spring DAC and Rogue ST100 power amp in his reference system. He was using the Rogue RH-5 as his linestage but later replaced  it with the Rogue RP-7 pre-amp. @avanti1960  aside from the  inferior dynamics, did you feel that the RP-7 was otherwise better than the RH-5 or did they sound pretty much the same?

We appear to only have one Rogue dealer in Oz, about 600 miles away, so I won't be able to try the RH-5 or RP-7 without buying and there's also no Rogues on the "used" market here. I haven't got the $$$ for a new RP-7 at the moment but I could possibly grab the RH-5 if the dealer here has it. 

The Cary SLP98 suggestion is interesting but if we suspect the use of the Rogue ST100's SE inputs is the cause of the lack of dynamics, I hesitate to buy another SE only pre-amp. 

I've always run my Rythmik sealed subwoofer (30k Zin) off the second pair of SE outputs on the Herron VTSP-3. It shouldn't be an issue as the ST100 is an easy 200k Zin for SE and the Herron's Zout is quite low at 100 ohms from memory. However, in the next few days I'll change the connection over to the sub's high level inputs running off the ST100's speaker outputs to ease the loading on the Herron and see if it makes any difference to dynamics. I had the sub connected that way when I was trying out the Kinki EX-M1 as it didn't have a pre-out output for the sub. 

@avanti1960 

... important to note is that the rogue RH 5 sounds much more dynamic than the RP 5 (no balanced connections either). it even sounds better than the twice as expensinve RP 7 which i owned. I was very disappointed in the lack of dynamics in the RP 7.

I noticed on another forum that you said ...

never heard the 9 but the rp 7 is possibly the most transparent and dynamic piece i have heard. incredibly clear with no loss in smoothness.

Did you change your mind later on the dynamics of the RP-7 after listening to it for longer, or did you still have the RH-5 and later pop it back into the system to compare?
   

Success!

This morning I moved the active subwoofer off the pre-amp’s second SE output and onto the Stereo 100’s speaker outputs. At the same time I flicked the Stereo 100 back to Triode mode. From my audio spares box I’d retrieved a pair of Harmonic Technology Pro Silway II interconnects that I used many years ago before moving to pairs of Audience Au24e, thinking that the silver Silways might provide a little more air and crisper leading edges. However, I decided not to put these cables in before I’d listened to the system with the subwoofer moved to high level connections.

I let the system warm up for about 20 minutes and then sat down to listen. WOW! This is easily the best sound I’ve ever had.

All of the minor niggles I mentioned in my opening post are gone. Leading edges are clean, quick, crisp and pure, dynamics are now excellent, there is additional delicacy and delicious-ness, presence is improved and everything just sounds more real, musical and emotional. These observations hold true across all genres. Listening to Rossini overtures revealed improved dynamics, a larger soundstage with better focus and minor details float up more effortlessly (eg. triangles during heavy passages) rather than being buried.

I really didn’t expect any of this as I’d put down the extra dynamics and "life" revealed by the CJ CA200 and Kinki EX-M1 integrated amps I tried as being due to their higher power. It now seems that a lot of it was due to the fact that they weren’t loaded down by the subwoofer as they didn’t have an SE output it and I had to use the sub’s high level inputs.

I feel like an idiot. I’ve used the Herron VTSP-3 for the last 10 years and always used the SE output for the subwoofer. Doh!

I feel like I could quite happily live with this level of performance as my end game. I have no interest in putting the Silways in now for comparison. If I had to absolutely nit pick, I could imagine that a top class, higher powered solid state amp might perhaps maintain even better separation during symphonic crescendos and deliver slightly tighter bass extension ... but ... what I’m hearing now is so good that I really don’t care and would not want to give up the benefits I’m getting across the rest of the frequency range in pursuit of that last 5% of bass performance.

I might play around a little cleaning up my AC power even further but otherwise I think I’m done for a while. :-)