Pacific dac: Lampizator's new top of the line dac

Zero000 · Oct 18, 2019

+the

marslo said:
I bought it with Valerio from Italian site audioantiquary.com , the tube was recommended by Trab, a fellow audiophile.
I bought 2 of them as I like their sound, I am affraid they are no longer available. Norman is right, this is Fivre 5r4gy from late 50’s, only 39 euro plus expensive shipment - 69 euro , still a bargain. I like it in my setup more than KR 5u4g RK which I still keep as a replacement. My PAC has an optional improved power supply to Amanero board, I recommend this upgrade very much to all of you who use usb as a main connection, together with FTA Callisto is a very good match.
My favourite Apricity usb cable does not work properly with PAC, during the test of LDMS it proved its quality though, the windows based music server works well with Apricity.

https://www.audioantiquary.com/en-us/categorie/valvole-rettificatrici/

They are commonly available on eBay.

I have a FIVRE 5U4G which I do use. Certainly preferable to Ked's KR 5U4G Anniversary rectifier but TBH I really didn't like that at all.

The FIVRE I have I would describe as slightly soft, spacious and easy on the ear. The KR I would describe as thin, steely sounding and overly etched. Horrid!

bonzo75 · Oct 18, 2019

User211 said:
+the

They are commonly available on eBay.

I have a FIVRE 5U4G which I do use. Certainly preferable to Ked's KR 5U4G Anniversary rectifier but TBH I really didn't like that at all.

The FIVRE I have I would describe as slightly soft, spacious and easy on the ear. The KR I would describe as thin, steely sounding and overly etched. Horrid!

You should try again now that you have a different pre. for example, we both preferred the potato masher at yours to the KR, but in other systems the KR was just far superior to the masher, including on the Allnic

Zero000 · Oct 18, 2019

bonzo75 said:
You should try again now that you have a different pre. for example, we both preferred the potato masher at yours to the KR, but in other systems the KR was just far superior to the masher, including on the Allnic

Hm. That's the problem, though. There is no right answer for everyone. The more you dabble the more you realise it.

I have a tough time thinking I'd ever like that KR but if you have a laid back overly warm system sound anyway it might help I guess.

bonzo75 · Oct 18, 2019

User211 said:
Hm. That's the problem, though. There is no right answer for everyone. The more you dabble the more you realise it.

I have a tough time thinking I'd ever like that KR but if you have a laid back overly warm system sound anyway it might help I guess.

Actually not. It is more about mating with the pre not whether it is laid back or not, valve or SS

Zero000 · Oct 18, 2019

Another problem comes with NOS rectifiers. Some of those sold on eBay really aren't in top notch condition anymore. So comparing like with like is very hard. One person's U52 may be performing very differently to another's, for instance.

Zero000 · Oct 18, 2019

bonzo75 said:
Actually not. It is more about mating with the pre not whether it is laid back or not, valve or SS

No it's the whole system. It can't not be. But I do agree the pre mate is super important especially with output valves.

wisnon · Oct 19, 2019

User211 said:
Hm. That's the problem, though. There is no right answer for everyone. The more you dabble the more you realise it.

I have a tough time thinking I'd ever like that KR but if you have a laid back overly warm system sound anyway it might help I guess.

KR or RK? The RK beats the regular KR.

Zero000 · Oct 19, 2019

#763.

Or: https://shop.best300b.com/products/kr-5u4g-lampizator

wisnon · Oct 19, 2019

RK beats KR...no doubt. I have both.

Zero000 · Oct 19, 2019

wisnon said:
RK beats KR...no doubt. I have both.

And the cheap Chatham has a mil spec both can only dream of.

Gotta love them for that alone.

Zero000 · Oct 19, 2019

Just tested my Chathams and they test brand spanking NOS.

20mA is new. The one I gave Ked is from the same batch so is in an excellent state.

Sorry about the sideways pic.

wisnon · Oct 19, 2019

User211 said:
And the cheap Chatham has a mil spec both can only dream of.

Gotta love them for that alone.

Vaccum pressure higher in the RK.
I have a Chatham too (had 2 and gave Lukasz one 6 years ago for his amp project) and Al has every version A/B/Y.
RK is very good. So far only Tak beats it for sure.

Zero000 · Oct 19, 2019

wisnon said:
Vaccum pressure higher in the RK.
I have a Chatham too (had 2 and gave Lukasz one 6 years ago for his amp project) and Al has every version A/B/Y.
RK is very good. So far only Tak beats it for sure.

Since you can't know what the vacuum pressure inside a Chatham is I'll say that's an educated guess? Or am I wrong?

wisnon · Oct 19, 2019

Educated guess yes, but the vac pressure in the RK is 100x a normal recti. Its why the glass is so thick.

Zero000 · Oct 19, 2019

wisnon said:
Educated guess yes, but the vac pressure in the RK is 100x a normal recti. Its why the glass is so thick.

Well if that's actually true they should say it on Best300B, instead.of "9th degree of vacuum" as it sounds a lot better.

Glass is thick to reduce microphony too. Trouble is I think it alters the character of the KR tubes in a non-positive way. But that's based in my sample of 1 RK valve, the 300B. So I could be very wrong. It might work well in the others for all I know.

wisnon · Oct 19, 2019

Recti is not the same as output tube. I speak of the RK recti...though 2 people I know live the RK px25.

christoph · Oct 19, 2019

User211 said:
And the cheap Chatham has a mil spec both can only dream of.

Gotta love them for that alone.

But my ears don't care about mil spec, they care about music.
As pleasing as the potatoe masher sounds, I much prefer both the KR 5u4g and even more so the RK 5u4g recti over the PM because both KR recties let me hear way deeper into the music

christoph · Oct 19, 2019

wisnon said:
Recti is not the same as output tube. I speak of the RK recti...though 2 people I know love the RK px25.

M and I?

dminches · Oct 19, 2019

christoph said:
M and I?

I am hoping to be on that list too but Best300B has still not yet shipped my tubes which I ordered over 3 weeks ago.

Zero000 · Oct 19, 2019

christoph said:
But my ears don't care about mil spec, they care about music.
As pleasing as the potatoe masher sounds, I much prefer both the KR 5u4g and even more so the RK 5u4g recti over the PM because both KR recties let me hear way deeper into the music

Now I am using Luxman C-800F/M-800A, which is absolutely stunning the result could be different for me, because that combo sounds entirely different to my 211 monoblocks.

I doubt it though I still primarily use the Chatham.

Audio Note love the Chatham. They put it in a lot of their amps.

Pacific dac: Lampizator's new top of the line dac

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