SET vs Class A vs tubes vs Class AB amps

It's bass, not base. My little SEP Dennis Had tube amp will play anything well...from chamber jazz to Little Feat to Mahler...as any well designed amp should. If your rig is "music style specific" there's simply something wrong with the thing...don't expect much low end from tiny inefficient monitors, or relative loudness from a 2 watt amp, but otherwise don't be denied! My latest amp experiment is a Schiit Aegir...so far it's brilliant...cost less than my cables.

Hi Wolf-Garcia-

1) got autocorrected. Yes, bass, sorry I missed it.
2) Thanks for your thoughts, but I don’t agree with your premise, but I’m glad you are happy with your system. Things are so system and component specific that is is hard to sometimes understand why someone prefers one system tone to another.  But, a general subjective statement that I think is more often accurate than not is that if you took a common audiophile system and swapped in a <25 watt, 2 volt input sensitivity amp, like the Inspire, most would be happy at nominal listening levels but disappointed at higher levels.
i think it is like the trade-off I feel with Magnepans.  I had three different models for 20 years and was ecstatic with the imaging and speed.  However, compared to a dynamic speaker, their bass is lacking- I’m sure some will argue this, but most agree that Magnepans are a bit lacking in the bottom. And to put a 10-20 or 30 watt amp as the drivers would be really disappointing.
I’m looking for extraordinary realism, sometimes at fairly high SPL’s. I’ve found that some of the less powerful tube amps and less sensitive amps in general have challenges in my system with analog. I owned a Dennis had Inspire amp for 18 months, pretty good on voice and mid/treble, but in my system, lacks bottom end with only 18 watts and a fairly low input sensitivity ( probably around 2 volts but Dennis doesn’t publish its sensitivity.  A BEDINI by comparison is .5v input sensitivity). BTW- speakers are Von Schweikert’s- 93db Efficient and 6 ohm.  I have found that for me, input sensitivity is important because I am using a pure tube phono stage (up to 80db gain) and a zero gain line stage.  So listening to vinyl, sensitivity is critical in my kit, which is not “simply something wrong”, just a preference and trade off I have as nothing- as in nothing- I have heard in any system to date- delivers the realism of my Benz-VPI- Vibraplane-Aesthetix-Truth front end.  I’m know I could add a line stage with gain or a SUT or a solid-state phono amp or listen to digital to “fix” my system and allow a lower powered amp to perform at a louder level without sonic degradation, but overall the tone and sonics would suffer for it.  
In addition, comparing a Bedini 25/25 with a 100/100 (same design and sensitivity 25 watts vs 100 watts) both sound pretty much the same at lower SPL’s and less demanding passages, but at some point the 25 clips and runs out of oomph before the 100. I’m not a head banger, both amps are well designed and play things well to a point. For me, in my fairly highly resolved system with many dependencies, the low power amps are really good on some things but not everything. realize not everyone shares my bias or preference, nor wants to deal with the overhead, but I can say that I am happy where I landed.

 Great stuff, shared with knowledge and respect , thanks . I ran a Modwright KWI 200 and JBL 4312A’s or Klipsch Heresy II’s with a sub. I then ran a vintage Marantz or a Sansui 9090 with the same speakers ( on 26” Sound Anchors ). Now I’m running a Had Inspire , Rogue Pre , Schiit Yiggy , Thorens TD 160, Zu Omens . I have a large supply on new and NOS tubes for the Had ( probably twice the amps price ). I love the Had -Zu pairing , but it’s VERY LIMITED . Low to moderate volume and quiet nights make for very intimate listening . It’s kind of like giant headphones . At  higher volume it’s irritating . Being a SEP it’s easy and forgiving . It’s also cheaper and little more powerful than a SET is. Bass is subject to which power tubes I run. But I have a sub I can turn on . As you can see, I’m a mid fi guy and cost driven . If you want to listen to Rush from another room , this is not for you . If you like clear vocals and strings this system is great . At modest levels even classic rock sounds good . My best advise is to audition different types of equipment. My next venture will be to incorporate a SS amp of 50-100 wpc into my system. So I’ll have to find something that’s not Too Dry . It’s all about the pairing and what sound you want . Happy Hunting , Mike . 

Thank you all for your opinions and advice, much appreciated!

Although the Schiit Aegir stood up well in its shoot-out with my little Firebottle HO SEP amp, it ultimately lost and sadly was sent home to Schiit. Nice try though and it clearly is a great design, but the Had digs deeper, sounds more like real music to my ears, and simply reinforces my preference for glowing tubes.