Lampizator Gain Problem

christoph

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The EML is a 274, but it's fine, really. The RCA seems a bit too bright, so I'll send it back. Last night, I ordered the KR rectifier, so eager to hear how it sounds.
I hope you ordered the "square" RK (Riccardo Kron) 5u4g Version because it sounds quite a lot better than the regular Lampi KR 5u4g recti :eek:
 

christoph

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christoph

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Agent86

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Did you get the RK 5u4g rectifier in the meantime?
Any impressions?
I tried it out, but actually prefer the EML tube much more. To my ears at least, the RK tube was bright and fatiguing (I'm very sensitive to that) while the EML was more relaxed and smooth. But with different mix of cables and components, the RK tube might work so I'll certainly try it out again in the future.
 
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christoph

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I tried it out, but actually prefer the EML tube much more. To my ears at least, the RK tube was bright and fatiguing (I'm very sensitive to that) while the EML was more relaxed and smooth. But with different mix of cables and components, the RK tube might work so I'll certainly try it out again in the future.
Strange, I hear it exactly the other way around o_O
How many hours are on the RK 5u4g?
 
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Agent86

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Strange, I hear it exactly the other way around o_O
How many hours are on the RK 5u4g?
I ran it in for about 100 hours before listening to it. From what I understand, rectifier tubes don't need much burn in. My final configuration is the EML rectifier, then the PSvane blue globe, and finally NOS Amperex Bugle Boys, which give a nice sense of air and separation.
 

christoph

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I ran it in for about 100 hours before listening to it. From what I understand, rectifier tubes don't need much burn in. My final configuration is the EML rectifier, then the PSvane blue globe, and finally NOS Amperex Bugle Boys, which give a nice sense of air and separation.
100 hours should be much more than enough.
I'm very sorry that you don't like the RK 5u4g you bought on my recommendation :oops:

@Bobofei86 also disliked his first RK 5u4g only to find out that his specimen might have been faulty after comparing his to a friends RK 5u4g :eek:
 
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Agent86

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100 hours should be much more than enough.
I'm very sorry that you don't like the RK 5u4g you bought on my recommendation :oops:

@Bobofei86 also disliked his first RK 5u4g only to find out that his specimen might have been faulty after comparing his to a friends RK 5u4g :eek:
Who knows, in a slightly different context the tube might fit in perfectly. I'm going to hold onto it, because I'm sure it'll get swapped back into my chain at some point.
 

Bobofei86

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Who knows, in a slightly different context the tube might fit in perfectly. I'm going to hold onto it, because I'm sure it'll get swapped back into my chain at some point.
Yes and always depends on the synergy with other gears, highly recommend you to try the SuperTNT 274b which i burn in for almost 100 hours already, not that aggressive as the RK or Gz480 and offer a very smooth presentation with lots of details, it's much better than ACME 274b and give a very good vinyl feeeling, most importantly, it's much cheaper than others which cost around 120 bucks only :)

I know this one is rare and diffcult to buy in Europe or States, please let me know if you want to try and i can find a spare for you
 

Agent86

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Yes and always depends on the synergy with other gears, highly recommend you to try the SuperTNT 274b which i burn in for almost 100 hours already, not that aggressive as the RK or Gz480 and offer a very smooth presentation with lots of details, it's much better than ACME 274b and give a very good vinyl feeeling, most importantly, it's much cheaper than others which cost around 120 bucks only :)

I know this one is rare and diffcult to buy in Europe or States, please let me know if you want to try and i can find a spare for you
I hadn't really thought about the 274b as an option, but that makes sense. I see there's a dedicated chain to the SuperTNT, so I may check it out. Thanks!
 

Steve Williams

Site Founder, Site Owner, Administrator
Hi there,

I'm a bit of an audio doofus, so I would appreciate some expert advice on the particulars of my variant of the Lampizator gain issue.

I have a Lampizator GG v1, and I recently swapped in a new integrated amp . I'm now using a Pass Labs Int-60 and I immediately encountered what appear to be fairly common problems with static and distortion. After asking the folks at Pass, I was advised to try a 6db in-line RCA attenuator. As a short-term fix, it definitely worked, and the noise is now gone, but I'd like to get some input on a more permanent solution. I'm open to swapping out the GG for a model with low gain/volume control or getting a power amp instead of an integrated, or just adding a passive preamp to my existing chain.

A couple caveats: I live in an older apartment building that's not grounded, so wondering if I need to factor that into any possible solutions with the excess DAC voltage Also, I have pretty painful fatigue issues and so I don't want to add anything to the chain that will be too bright or forward.

1) Amplifier: Pass Labs Int-60

2) Music server/renderer: Antipodes CX + EX;

3) DAC: Lampizator Golden Gate V1(R2R); single-ended, no volume control; Tubes: KR PX25; EML 274B

4) Speakers: Verity Amadis S


Thanks for your assistance!
You can try Herbies Audio Lab damping rings i use them with mine
 

Steve Williams

Site Founder, Site Owner, Administrator
Damping rings for the tube synergy issue, correct? Not for the gain problem, right?
Yes. Not for the gain. But the tubes in the Pacific and GG ring
 

bonzo75

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Feb 26, 2014
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Hi there,

I'm a bit of an audio doofus, so I would appreciate some expert advice on the particulars of my variant of the Lampizator gain issue.

I have a Lampizator GG v1, and I recently swapped in a new integrated amp . I'm now using a Pass Labs Int-60 and I immediately encountered what appear to be fairly common problems with static and distortion. After asking the folks at Pass, I was advised to try a 6db in-line RCA attenuator. As a short-term fix, it definitely worked, and the noise is now gone, but I'd like to get some input on a more permanent solution. I'm open to swapping out the GG for a model with low gain/volume control or getting a power amp instead of an integrated, or just adding a passive preamp to my existing chain.

A couple caveats: I live in an older apartment building that's not grounded, so wondering if I need to factor that into any possible solutions with the excess DAC voltage Also, I have pretty painful fatigue issues and so I don't want to add anything to the chain that will be too bright or forward.

1) Amplifier: Pass Labs Int-60

2) Music server/renderer: Antipodes CX + EX;

3) DAC: Lampizator Golden Gate V1(R2R); single-ended, no volume control; Tubes: KR PX25; EML 274B

4) Speakers: Verity Amadis S


Thanks for your assistance!

Hi you just need to swap the output tubes. The PX25 are high gain and sometimes cause that distortion. The PX4 or 300bs will work, but I personally would prefer the Lampi 45s, or the EML globe anniversary 45 (which you will need to buy in the used market).

Once you get that working, try the KR or RK 242 to see if it works, but that in your system might distort too
 

Caseyboy

New Member
Jan 19, 2021
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Just wanted to jump in and say I have been having this same gain issue between my Baltic 3 dac and Hegel amp. High gain can sound so spectacular right there in the room with you on some recordings (have downloaded Carmen Gomes Ray or the David Chesky Audiophile sampler for example) but can be also unlistenable on a lot of recordings - female jazz, solo guitar, piano with gain distortion.

They are okay with lower gain setting - just less of that high gain magic. Have tried a tube preamp in the mix (Don Sachs) and cures issue but like low gain less of the great dynamics and live they are in my room sound.

Have rolled tubes and while I like overall new tubes - gain issue is still present.

Have purchased a new to me but old Almarro SET amp - thinking it might solve gain issue. Will be interesting where it sits on dynamics vs distortion scale. Part of issue might be my speakers (Zu Soul Supreme) that are hyper dynamics live sound. The Almarro should be here this week.

Any new ideas about this issue out there - has Lukasz ever commented on this issue.
 

Alrainbow

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Dec 12, 2013
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Have you tried the volume control in your player ?
 
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Levitator

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Jul 1, 2020
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I find that I have to run the Baltic 3 at about -20 and then adjust the volume on my pre amp for it to sound right. I tried bypassing the DAC but had no success this way. I don’t have a low/high gain setting on my B3 as my model has volume control to be able to use it direct to amp
 

Agent86

Member
Sep 6, 2020
37
21
15
In the Baltic 3 manual, I came across the following section that explains the gain problem. I understand the hi-low gain settings as the workaround, but I gather that Lukasz is more generally recommending a passive preamp volume control in place of a chipset--is that correct? Also note the second paragraph on opamps. I know my Pass Labs Int-60 has a chip volume control, but I'm wondering if I also have a case of the dreaded opamps? Does anyone know if the newer Pass preamps have a different volume control design?

"Generally - we prefer the sound of the DAC with high output levels, and most amps don’t have any problem with that. A simple potentiometer or stepped attenuator takes care of that. Only solid state chip based preamps will saturate and distort thats why we need to know in advance about such solid state chip volume system being driven by the DAC. We will keep then the volume level at the 'book' level of 2 V pp.(Lo-gain switch position) Having said that - chip volume systems and preamps with opamps belong in home theatre (cheap one) and DEFINITELY not in high end.

LampizatOr DAC should not be used with opamp based preamp, no matter how good. Because the op-amp feedback loops will remove the whole joy of music as delivered by the tubed DAC."
 

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