2. amps-preamps
  3. 168468-111061

More watts or better power ?

Hello, I am currently running a PS Audio BHK Preamp, which has a tube input stage, to a Pass Labs XA25, Class A (50watts at 4 ohms) power Amp, into a pair of Sonus Faber Minima Amator II bookshelf speakers. My system sounds very good, and at 4ohms, I have 50 watts of power to my speakers, which is on the lower end of their rating.

What would be a better investment (most bang for the buck) into the system? Replace the XA25 with a higher watt amp (PS Audio BHK 250?), or spend the same money on a power conditioner (PS Audio Power Plant II?) Or upgrade the Minima Amator (which are sounding very good) to another set of speakers.

The system is in my bedroom, I have a very small house, hence the smaller Sonus Faber Speakers. I have beenplaying around with an SVS micro sub as well.

Other system parts, Clear Audio Concept/ Concept MC, Pass Labs XP15, Little Green Roon Server, Schitt Yiggi, and a Luxman MQ 88 Tube amp in rotation.

Appreciate your input
Mark O





marktheshark

Showing 2 responses by daledeee1

daledeee1's avatar
daledeee1
606 posts
 
I love the XA25. I own one.  If it already plays loud enough.....

So.  Cross the subs at 80 to 100 Hz.  Then you for sure have enough power.  The drivers in your speakers will vibrate less at lower volumes clearing up the sound, less IM distortion.  And the subs will increase dynamics.

Also, unless I missed it do you have your speakers isolated? I want to try this as well.  Supposed to clean up several things.  Soundstage for one.

If you want to try a different pre amp, a Don Sachs or Supratek are high quality for 2 to 3 k.
daledeee1's avatar
daledeee1
606 posts
 
Your amp plays loud enough so keep it.  Subs crossed at 80 Hz or so will take more load off the Xa25.  The speakers will sound better with less IM distortion.

Don Sachs and Supratech make excellent tube preamps if you want to try one.

Speaker isolatIon is another thing to consider if not done.
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