System advice

Really depends on what sound characteristics are most important to you.  I know you’re looking for better bass, but a lot of amps will easily give you that.  And I think you’re finding the sound a little on the bright side?  Anything else?  Also, where would you be buying the amp from and what’s your budget?  Are you only buying used?

After I changed the source from Naim CD XS to Lampizator Poseidon there is no sign of the brightness, even bass is just fine right now somehow. I really like what Lampi does to the sound and I would like to add more of that magic to new amp. A pinch of sweetness and roundness would be appreciated but without a loss of timing, dynamics, resolution and other things that are available in most of solid state systems. Is it possible to have it all? :-)

In case of tube amplifiers I think a push-pull amp would have enough juice to drive Joseph Pulsars and provide a pinch of tube sweetness.

I’ve been thinking about buying used PA. My budget would be about 6000 USD.

Any thoughts on Octave RE 320? People rave about Octave in Europe.

Don’t know what PA is.  I love Octave and would own it myself, but at 75 Wpc I’d be a little concerned if it has enough power.  Also, from what I’ve read of Octave their house sound is on the neutral side as tube amps go but that may work for what you’re looking for.  Personally I’d like at least 100Wpc on tap, but depending on the design of the Octave it may still work.  Personally I think that Octave would sound magical in your system as long as it has enough power.  Another one I would look at would be the Unison Unico 90 that’s a hybrid and was recently reviewed by Michael Lavorgna…

https://twitteringmachines.com/review-unison-research-unico-90-integrated-amplifier/

@soix PA is short form of power amplifier, I saw it in Ayon Audio so I thought it's in common use. Sorry for that!

Octave RE 320 provides, based on the documentation: "maximum output power of approx. 2 x 130 W with two tubes in push-pull mode. The performance bandwidth of the RE 320 extends from 5 Hz to 85 kHz. The pulse power can even reach over 200 watts. ". 130 WPC on pentode mode, 75WPC on triode mode. I guess you are concerned about triode mode?

I suppose more triode power will require much more expensive monoblocks.

Yeah the way they listed the specs was confusing as they listed output as “low” and “high” that I didn’t realize was pentode or triode.  I’d have no reservations in pentode, and it might even work in triode for most music/situations. 

Would you consider it now yourself?

I'm really wondering how the sound characteristics would change after upgrading from Arcam to Octave RE 320. I'm sure it would be better because it has more power and so on, but I'm not sure if it will provide this tube magic that I count on a little. A lot of people say Octave works like a solid state. As long as it refers to dynamics and bass - great, but I still hope for some tube magic in it.

I think the Octave has plenty of tube magic, but the only question is if it has enough warmth as it tends to sound more neutral.  The Octave won’t sound thin or sterile by any means, but If you’re looking for an amp to add warmth it may not be your best option.  But that’s a personal taste thing.  

Yeah, thanks. I read so many positive comments about Octave that it's really hard to believe I woudn't like it. As there is a real issue with finding Lampizator with preamp, I started toying with the idea of buying Lampizator DAC, Octave RE 320 and.. HP500/700 for pre. Am I crazy? :-) 

Octave always gets stellar reviews with the caveat that, especially for tube amps, they have a relatively neutral sound.  If that’s what you’re looking for Octave is obviously a strong choice, but at those prices there are probably other options as well so might wanna look into what else is out there in that range.  That said, I’m sure that Octave gear with the Pulsars would sound stunning as it should at those prices. 

I’ve heard several octave amps and have the octave Jubilee preamp.
I think they provide warmth without being soft and are particularly better at controlling the low end than some tube amps. This is so subjective that only one set of ears really matter though 

Maybe the MBL C41 Network Player.  Doubles as a pre, DAC, and has streaming.  Reviews seem to indicate a ridiculously great sonic buy as it was demoed with MBL's top-of-the-line revealing system.

I finally bought  Lampizator Big 7 MK II with Engine 11 and David Laboga Emerald MK II USB cable to connect Lampi to my temporary streamer which is Mac Mini.

I'm satisfied for now - Pacific was obviously better, but also 4 times more expensive. I should probably now have some fun with tube rolling because this unit came with the default tubes and Pacific came with KR Audio tubes. 

Next stem is to start looking for a proper pre & amp. From some reasons I decided not to go into Octave family. I'm thinking now about Audio Research or maybe something from my own country like Ancient Audio - no idea if it's known anywhere else.

Lampi + Emerald - excellent choices!  Enjoy!

Good luck on your pre+amp search. Thanks for sharing.