Pass INT-25, split decision and maybe option?


I recently bought a used INT-25 to drive my PureAudioProject Trio15Classic. I have never been so torn by an amp as by this one! On one hand the details are addictive, but on the other hand, the details can be so distractive that I struggle to listen to the music. The INT-25 does do space really well and that’s definitely something I love and look for in an amp. I do miss some of the midrange magic and the warmth that a tube amp brings as well.

 

At this point, I’m not sure the INT-25 is going to stay. There’s so many things I love about it, but other things that distracts me from listening to the actual music.

 

I also miss some of the warmth that tubes bring. Is there such a thing as an integrated tube (or hybrid) that retains all the strength of the INT-25, but adds the midrange magic and warmth of the tube amp? Don’t mind if I lose some of the distracting details in the recording, but don’t want to give up too much of that. The PAP's do like a bit of power (the INT-25 is definitely sufficient), so low power SET's are not likely where I'd go.

128x128audiojan

NYAL 150. This is a 75wpc Mosfet amp with a tube front end. I have one. The best of both tubes  and transistors -  New York Audio Labs. 

+1 Yogiboy

Audio Research I-50.

I've directly compared them. 


While the Pass INT-25 is not a overly detailed amp... and has a very good midrange... it can’t compete with the ARC I-50 on warm, natural sounding music with the details in proper proportion.

The sources are PS Audio AirLens into DirectStream Sr (modified) via i2S, PerfectWave CD transport into the same DAC via i2S. Vinyl is a Denon DP-59L with a Shelter 50- cartridge into a Andover Audio SpinStage.

 

basically I need two inputs

@bjesien I don't think the source or cables are limiting anything,.. the source is PS Audio AirLens (via i2s) into a DirectStream Sr (modified). All analog cables are SilverSmith Fidelium and so are the speaker cables. I've been using this setup for years and extremely happy with it.

 

If I use my little backup amp, Luxman SQ-N150, the sound is very sweet and you can listen for hours, but it's definitely a bit underpowered (you can hear compression at louder passages even if you keep the volume control moderate).

 

In the perfect world, I would find something like the SQ-N150 but with the power and (most of the) details of the Pass (and the bass of the Pass).

I would always flip flop yearly or so between tubes and solid state. I finally came to the realization that I just listen more with tubes. Might not get some of the characteristics of SS that I enjoy but I don't think that perfect middle ground exist for me (yet). 

Just be careful not to under power your speakers with tubes and nowadays you have to be careful not to buy a tube amp that sound like SS. 

Good luck, maybe give it some time or borrow some cables or new source?

The Unison Unico hybrid integrateds are worth looking into given what you’re looking for, and this seller offers a 30-day return policy, which is really nice.  Of course there’s always the used market. 
https://soundapproach.com/search/?q=unison%20unico

There’s also Pathos that has similar products and several with gorgeous looks if that matters. 
https://upscaleaudio.com/search?q=pathos

Hope this helps, and best of luck. 

I usually drive mine direct from whatever Dac I am using so it is not an issue. Perhaps you have vinyl or cds as part of your sources. I pretty much have left those sources behind. So your thinking of integrated tube amps then? It might help if you spell out what connectivity you need since the rest of your system is not listed with your profile.

@bruce19 thanks for the suggestion, but FirstWatt doesn't have an integrated and the reason why I got the INT-25 was to simplify the system.

 

I really want to stay with an integrated...

You might like some of the Firstwatt amps. I think of them as Nelson Pass's solid state SET amps. Most produce 25 wpc however. https://www.firstwatt.com/

If you are at all disposed to kit building they can be done that way too, https://diyaudiostore.com/