Low powered integrated recommendation

Quicksilver Audio see click here

Mike

Ditto...

NAD

Pass Labs 

If price is not an issue, then how about Audio Note? Ask @ghasley  about them. Or @decooney 

https://dejavu-audio.com/audio-note-integrated-amplifiers.html

Do you need a remote?

Looking at your quite excellent listed main system, you might enjoy something from Sugden. They've got multiple choices for integrated amps. And there are color options if so desired. The good sound in a compact package was my thinking here. If you'd like to go further upmarket, and depending upon one's speakers for the bedroom system, Gryphon also has a few choices, but maybe less compact. 

Then again, reviewers seem to have fun with the Musical Fidelity A1. 

Best of luck!

Notable well reviewed low powered integrated amps:

• Sugden A21SE Signature Edition 30/40 wpc 8/4ohms
• Lejonklou Boazu 24wpc
• Don Sachs Valhalla tube 32wpc
• Line Magnetic Analog Sound AS-125 18wpc
• Pass Lab Int-25 ss 25wpc
• Leben  CS600X tube 28-32wpc (Genalex Gold Lion KT77 tubes)   
• Luxman 590AXII ss 30/60wpc                 
• Mastersound 845 Compact integrated 30wpc 12/7wpc tested         
• Grandinote Shinai 30wpc 

Rega IO is stunningly good for the very low price, and fits your requirements perfectly. 

Compact, 30 watts, inexpensive, sounds great, and also has a decent MM phono stage.

I use mine in a desktop system with a pair of Chartwell LS3/5As and the sound is remarkably good!

The Linear Tube Audio integrateds are worth a look, and they offer a trial period.  Best of luck.

https://www.lineartubeaudio.com/integrated-amplifiers

@zavato can you share with the group what speaker brand / model you have today, along with size & dimensions of the room you are listening in?

LTA and Pass

Sugden A21SE Signature Edition.

Had the Pass(to heavy)

Also look into CHOCO Sound Emie.  Really great sounding, small form int amp..

Very little mention of Heed on this Forum, but the Elixer and obelisk are both excellent. Small footprints,  very good sound.  The Elixir has a headphone jack as well. The Audio Note OTO sounds very good, but it is quite large and heavy, runs fairly hot and only 10 watts. Not to mention quite a bit more expensive than Heed and no remote 

I recently purchased a Rega Brio to use in a second system; I am using the amp with some much older 84 db efficiency speakers—early 1990w Infinity Modulus satellites with EMIT tweeters, so I opted for the 50 wpc Brio over the 30 wpc Io model.  I am quite pleased with the sound quality, and construction seems to be excellent.  And even the larger Brio is compact, which was also a key criteria for me.  Finally, and this is not an audio issue, but the amps are made in the UK, so taxes on profits do not go to the rapidly expanding Chinese military.  The Rega Io should fit the bill.

Don Sachs Valhalla, if you can find one. 

The Nagra Classic Integrated Amp is tough to beat. More power than you wanted, but a small form factor, very reliable and sounds great. No Phono

https://www.nagraaudio.com/product/nagra-classic-int/

Triode Lab 45 Evo

Highly recommended. Take a look.

Musical Fidelity A1.

The rega may be a good fit for me 

of the ones i've hear, cost being no object, i'd get the pass; for less dough i'd get the rega brio. i'd also look at the vincent sv-200, which sounds vg for around a grand.

+1 on the Sugden A21 signature. 
unless you need power on/off or source switching on your remote. 

Bruh, the Zest from Vista Audio is a fantastic little class a/ b amp with a very small footprint that puts out about 30 watts per channel. Check out Steve Guttenberg’s review on it.

I’d consider one of the relatively low wattage class A integrateds from Accuphase. 
 

However, since it’s never bad to have more power than you need, I’d personally save a bundle over some of the really pricey choices and grab a like new/preowned Hegel 390 for about $3000. Or splurge for a 590 for a still very reasonable 4500-5k. 

My favorite integrated amp is the Synthesis A40 (pushpull tube amp using KT66 tube).  It comes with a very good built in DAC.  This is a warm sounding amp with a very lively, punchy sound.  However, the chassis is on the large side (a good thing, in terms of dissipating heat).  Input selection and volume can be done by remote control.  Audio Note makes good sounding integrated amps too, like the Oto (pushpull EL84) and the Soro (pushpull 6L6).  

I am not as big a fan of solid state amps because most sound flat and lifeless when played at the same volume level as a tube amp; they must be played louder to come alive.  Still, most are otherwise quite decent.  For modestly powd solid state, the Sugden suggestion, above, is quite good, and I would add Lavardin.

Audio Note Oto SE.

Look for a second hand one. It's a single ended pentode. If you find a SE Signature, get it! Jackpot. Look for one with 4 knobs, the ones with 5 knobs are quite old now.

If you want to buy new, Audio Note has had a price increase on 1st July, before that I enquired and the new price for a Signature was £4700 rising to around £5500 now. You can find a nice second hand SE for around £2000, if you're lucky you'll find a Signature at £2,500-3500. The holy grail is the Silver Signature if you want to spend thousands more (and if you can ever find one!)

It's a 10W valve amp. I have never needed to push the volume past 50% in my small-medium room. Yes high-efficiency speakers are a good idea, but before my Audio Note speakers I've used it with ProAc D2Rs and Harbeth P3ESRs no problem.

The sound is absolutely gorgeous, whilst still retaining clarity. EL84 valves. I have owned a Sugden A21SE Signature, and while I had a lot of respect for what it did, I couldn't love it. I love the Oto SE and the SE Signature. I also have a couple of pre/power combinations (Croft/Primaluna/Audio Research) but always want to listen to the Oto.

No remote control, but I use Lumin U2 mini streamer with Leedh processing for changing the volume when the cat's on the sofa with me.

You may want to consider one of the Raven Audio integrateds.

I’ll second the Vista, though in my case, the Vista Spark.  High quality, low power (35wpc).  But very good sound quality, and <$500.

Lots of great suggestions.  I will add Decware Torii to the list.  Beautiful, transparent and fun to listen with.