Psvane Acme Series (new flagship series)

Lockeray

New Member
Mar 10, 2019
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@Lockeray how is the 300B treating you since your last post? Has some of the lost magic returned? Any new observations?
It's been a bit of a roller coaster ride. There are good days and bad days. I think it takes a bit of time to stabilise. I did some tweaks such a dressing the cables and cleaning out the connectors and those helped as well.

Overall once its settled down... The acme 300bs are expressive and refined sounding and very pleasing to the ears. So much so that I decided to take a step further and made the purchase of the acme 845s. I alrdy have it and will be hooking it up soon. Will post further impressions soon.

Cheers,
Ray
 
Mar 18, 2019
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Overall once its settled down... The acme 300bs are expressive and refined sounding and very pleasing to the ears. So much so that I decided to take a step further and made the purchase of the acme 845s. I alrdy have it and will be hooking it up soon. Will post further impressions soon.

My experience has been the same. The tubes sounded better than stock right out of the box and keep getting better. I have about 100 hours on my 300B and 845 ACME tubes and am very happy with them. The only unexpected issue was a slight high pitch from my tweeter. I re seated the 300B on both channels and have not heard it since. It was a relief when the ever so slight high pitch sound was gone. I do not know if the pitch was a seating issue or part of the break in process.

Still looking researching pre-amps. PSAUDIO has my attention now.

Kind regards,

Jeff
 
Mar 18, 2019
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Figured out the high pitched noise....I recently switched to a Google Fi phone which uses T-mobile and Sprint. Since the change from Verizon I have heard the high pitch when my cell phone is in my audio room.
 
Likes: Lockeray

Lockeray

New Member
Mar 10, 2019
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I have swapped out my shuguang we 845s for the acme 845s. Now my lm 219s are running on both the acme 300bs and 845s. With the new acme 845s, the highs are more refined and well controlled. In certain tracks that seemed a touch too harsh before, it's now much smoother with better air and extension. Besides that it provides better punch and dynamics. Yet while it provides the grunt, it does so in a nuanced and detailed manner.

With both the acme 300bs and 845s, it comes the best of both world. Speed, detail, punch at one end and the soul reaching intimacy of the Sets. Price point wise and performance wise, this is definitely a sweet spot for me.
 

the sound of Tao

Well-Known Member
Jul 18, 2014
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I have swapped out my shuguang we 845s for the acme 845s. Now my lm 219s are running on both the acme 300bs and 845s. With the new acme 845s, the highs are more refined and well controlled. In certain tracks that seemed a touch too harsh before, it's now much smoother with better air and extension. Besides that it provides better punch and dynamics. Yet while it provides the grunt, it does so in a nuanced and detailed manner.

With both the acme 300bs and 845s, it comes the best of both world. Speed, detail, punch at one end and the soul reaching intimacy of the Sets. Price point wise and performance wise, this is definitely a sweet spot for me.
That’s great news... I’d better pick up my act a bit and get some proper valves happening soon... you guys are all racing away to better hifi happiness and I wanna be getting me some of that Psvane acme action.
 
Nov 21, 2017
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Has anyone compared the Elrog tube to the Acme’s? I’m interested in both (845 tubes) for my Nagra. Also, are these tubes larger in diameter than stock 845’s?

Thanks in advance for any opinions or help on this,

Chris
 
Jun 10, 2019
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My first pair of ACME 300Bs had one unruly tube and were sent back. The second pair arrived late last week. I have only 30 hours on them so far of mostly frictionless media served on autopilot.

Once they have a couple more weeks in the socket, I'll start to listen more critically and roll them in comparison to both Sophia's Royal Princess' and their diminutive blue bottle WE repro's.
Hello
I am very interested to comparison of Acme Vs Sophia Royal Princess that i find really fantastic. Brgds
 
Dec 9, 2018
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Washington State, US
Hello
I am very interested to comparison of Acme Vs Sophia Royal Princess that i find really fantastic. Brgds
http://psvanetube.com/wordpress/acm...-better-than-i-have-ever-heard-before-period/
Somebody claimed that

Acme 300b tubes supplied the most beautiful 8 watts or so i have ever heard. This time they replaced the Sophia Electric Royal Princess 300b’s which were already very engaging to begin with. Music effortlessly played against a pitch black background. Highs were airy, midrange was surreal and bass was accurate. Instruments were incredibly textured and transparent. I couldn’t bring myself to stop listening even after my wife called me three or four times to eat one of my favorite meals. I was blown away and completely lost in the music i was listening to. Soundstage was wide and deep way beyond where my speakers were placed. The midrange sounded slightly forward on some tracks but it wasn’t so much as “In your face so”. It was like the artists were performing 2 or 3 feet in front of me. Warm and engaging but very transparent indeed

I myself have Sophia Princess 300B carbon plate tube not Royal Princess.

Sophia Princess 300B carbon plate sounds round and full without etched high.

But after replacing Sophia Princess 300B carbon plate with Acme 300B, it sounds more transparent and detailed with deeper bass slam.

Thus Sophia Princess 300B carbon plate is no contest to Acme 300B at all.

I bought mine from below link.

https://www.hifi-amplifiers.com/en/...-tube-replace-we300b-matched-pair-p-5262.html

The dealer shipped it very fast with good communication.
 
Last edited:

adamaley

Active Member
Apr 15, 2016
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Minnetonka, MN

What I like about LM508 after changing into Acme 805 and 300B is beautiful tone out of violin.

I am listening to above music through redbook CD now.

There is one more thing that I can do to improve LM 508, that is to replace key resistors , capacitors and input and speaker connectors with better quality ones.

But even without it, I am happy with LM 508 as of now.

I have no plan to add pre-amplifier to it.
Thomas, I would definitely recommend adding a preamp to the LM508ia especially because you are enjoying it so much in its current configuration. You have an amazing complement of tubes in it but their full glory is hindered by the preamp section's volume control. Moving to the volume control of my Golden Gate DAC was a significant improvement. A Coincident Statement Linestage was an even larger improvement albeit with too much gain since the gain section of the LM508ia isn't bypassed in its Pre In mode (a disappointing design flaw). I have since ordered a lower gain preamp which I will receive in a couple of weeks.
 
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