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Line Magnetic 219ia vs Mc225

I am currently changing things up my system. I am looking to purchase a tube amp and have narrowed down quite a bit. I am unsure however, whether it would be more wise to go with a SET design or a push-pull design. The two amps in particular that I have in mind are either a Line Magnetic 210ia or 219ia SET 845/300B amplifier, or a vintage mc225 push pull amp with 7591 tubes of course. I waved the idea of a primaluna around but am pretty set on the two amps I’ve mentioned.. More will be familiar with the mc225 than will be with the line magnetic, but they get stupendous reviews and feedback, placing them as some of the best out there, next to shindo etc., in the tube amp world. The 225 obviously has its cult following as well, and is renowned and said by many to be maybe the best Mac amp of all time. (doesn’t matter)... anyway..

I am predominantly a record listener, but also listen to some digital and CD. My source pieces consist of a VPI Classic 2 turntable with a Soundsmith Zephyr 2 cartridge, an OPPO 105, and a Marantz 7701 preamp/ phono stage.

I have sold my previous speakers, and will be picking up a pair of 60’s vertical cornwalls this week. 102db obviously means that i do not have to consider wattage as a factor at all. I listen at low to moderate levels generally. Even 2 watts will have the cornwalls blaring. At this point the consideration is quality of wattage and current. The current will be responsible on the power to drive the 15" bass drivers in the cornwalls way more so than the wattage. The line magnetic SET amps will have no issues driving my speakers as they have large quality made transformers and move tons of current.

Here is the thing. I listen to jazz, classical cello and bass arco works, etc etc. I like soft rock as well. I also listen to very aggressive forms of rock. Hardcore, metal, thrash/speed metal, power violence, sludge, crust punk, etc etc. Those familiar, know what i mean. I am unsure on whether to go with a SET amp or PUSH PULL. Will one suit me better, or does it not necessarily matter, and either should do just fine? I know that the mc225 is known for being tubey, however natural, tight low end etc. The 219ia is known for being extremely transparent, refined, with a bold tight low end, beautiful 300B midrange, etc. Read Steve Huff’s review of this amp if you are unfamiliar. He calls it just about the best amp he has ever heard..... However will it does for the heavier stuff i listen to? This music is listened to on LP form more than less, and is recorded well and many are analog recordings.

Any input by those familiar with these two amps OR with push pull/SET amp comparisons in their own setups, please chime it with advice. I do appreciate it!

jkull
almarg's avatar
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almarg
9,670 posts
 
Earlier I connected the oppo via XLR L channel analog output, into the SVS and something was NOT right. I got signal through to the sub but it was clearly audibly wrong with what I was hearing. I felt like I was hearing highs and miss [mids?] come out the sub as well...the sub has L and R inputs.
The only thing I can think of that might account for that would be if the sub’s menus are set such that it is expecting its input signals to have been subjected to bass management, which I presume the Oppo does not provide. If so, you should be able to resolve that by changing various settings in the sub's menus.
i cannot see it necessary to manually adjust my sub when adjusting my 219 volume. That sounds primitive and odd to me???? I would rather not use one if It cannot correlate in volume as I adjust the 219... ugh
Agreed. That would be very undesirable.
Adjust the oppo volume is a no go as well.
Then I guess the only remaining possibilities are not using a sub, or buying a different sub that provides speaker-level inputs, or trying to find a suitable speaker-level to line-level converter.

Regards,
-- Al

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wig
1,270 posts
 
Watersalas-

Congrats on your new LM 508IA!  It's a fantastic amp and what I'm using as well completely rolled with Psvane 805, Sophia Mesh Plates 300B, Tung Sol Round Plates 6SU7 and many 6SN7.

In regards to the 6SN7, it's going to be a trial and error on which you like best in the circuit. Sylvania VT 231s and Ken Rad has always been my favorite go to tube, surpassing my Sylvania W, Raytheon smoked glass but I like the Sylvania WGTA in this circuit, it has both clarity and body the other 6SN7 have clarity but didn't sound as good.

The Psvane are a nice improvement and at $125 for a matched pair from Aliexpress, you'll gain improvements across the board. Happy Tube rolling...

Also, change the stock fuse to Synergistic Research Black Fuse; Big improvement in SQ and experiment with fuse direction. 
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charles1dad
10,250 posts
 
Psvane is really a good quality current production tube and generally seem to be a step above comparable Shuguangs (although some of their offerings are quite good). If Psvane ever makes a W.E.Replica version of the 805, go for it! This is sonically their top tier series of tubes.

Waltersalas, not everyone is not convinced on the idea/use of upgrade level fuses and I don’t know where you stand on the issue. I’m in agreement with Wig in regard to their positive contributions. In my and a close friend’s experiences with our systems they have consistently benefitted DACS, preamplifiers and power amplifiers. Obviously this matter is a personal call. I’ve just had rewarding experiences with changing tubes, capacitors and fuses over the years. Anyway that is my 2 cents worth, I can appreciate the joy the SET 508ia has brought to your audio system.
Charles
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waltersalas
952 posts
 

Thanks again, folks, for your excellent suggestions. I liked the 508ia right out of the box, but after 40-50 hours, I just wasn't getting the refinement I wanted, which I (correctly, I think) attributed to the stock Electro Harmonix 6SN7 and Sovtek 6SL7 tubes. I replaced with those with a pair of Sylvania JAN VT-231s (good call, Wig!) and an RCA VT-229 and was astounded by the immediate level of improvement I experienced. I don't want to fall prey to recency bias, but I do believe that the 508ia is the best amp I've ever heard in my system, better even than the VAC Ren 70/70, which I dearly loved for several years. I am not sure that the 508 has quite the same degree of mid-range magic that was the VAC's strong suit--though with the NOS tubes, it is at least a horse race--but the bass is better (deeper, more clearly defined, etc.) and the musicality is a draw.

Of course, the usual caveats apply--IMHO, in my system, YMMV, and so forth. The really exciting part is that I might have a hundred hours on the amp max, so it is probably still breaking in, and I have not yet rolled any 805 or 300B tubes to see what further improvements that might yield. I will say that I could happily live with this amp just as it is for the rest of my days, and that to anyone thinking of an audition, find, beg, or borrow some NOS tubes so that you will know what this amp can really do. It is just spectacular!

I will certainly look into the fuse upgrade, and those Psvane sound like a no-brainer at $125 for a matched pair. I had an octet of KR 300Bs in my VAC Ren, and I hate to confess what I paid for those.

Finally, this amp is just beautiful to look at, especially at night!
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charles1dad
10,250 posts
 
Chris,
You occupy an enviable position at this point. You find the 508ia performance "spectacular " with the use of better 6SN7 input tubes. Experience and logic dictate that upgrading the 300b driver and the 805 output tubes will push the sonic envelope further. You’ll find yourself in situations where shutting down the system and leaving your listening room will be unusually difficult to do. This is how powerful the emotional involvement of listening to music becomes when you get things right as you’re  surely discovering. Fortunately your amplifier is SET and  you’ll only require one pair of 300b and 805 rather than multiple pairs.
Charles
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