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Old 12th April 2012, 04:26 PM   #21
Dzius is offline Dzius  Poland
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As a matter of fact I've been listening to it for several months.
Pearl_foto3.jpg
Pearl_foto4.jpg
Pearl_foto5.jpg
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Old 12th April 2012, 10:11 PM   #22
6L6 is offline 6L6  United States
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Nice! Can you provide any information (preferably schematic) of the loading boards with the dip switches? They look very interesting.
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Old 12th April 2012, 10:50 PM   #23
AVWERK is offline AVWERK  United States
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You can find the loading info in the Xono manual and schematics and one of the pages lists the combinations of dip settings and the resulting resistance for your moving coil cart.

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David
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Old 13th April 2012, 05:58 AM   #24
Dzius is offline Dzius  Poland
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Since I my phono cartrige is MM not MC I followed the article
Load the Magnets!!! - [English]
rather than Xono Owners Manual.

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Old 13th April 2012, 03:05 PM   #25
PKI is offline PKI  United States
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Sorry for interrupting. Folks, correct me if I'm wrong: Pearl one is a MM preamp and Pearl two is a MC preamp, right?
Is it possible to make a phono two and just bypass the additional gain stage and use it for a MM cartridge as well?
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Old 13th April 2012, 06:35 PM   #26
Dzius is offline Dzius  Poland
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It doesn't matter a lot. Pearl II has more gain and that's why more suitable for MC cartriges which have generaly weaker signal than MM cartriges. There is no harm in using Pearl II for MM. The only difference is in cartrige load. MM and MC differs in that respect substantialy. Additionally in case of MC choosing proper load is very important.
Just find Pass Laboratories Xono Owner's Manual PDF page 3-4. Look at the colour photo on page 4 and you will see.

Last edited by Dzius; 13th April 2012 at 06:53 PM.
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Old 13th April 2012, 08:52 PM   #27
6L6 is offline 6L6  United States
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Quote:
Originally Posted by PKI View Post
Pearl one is a MM preamp and Pearl two is a MC preamp, right?
Is it possible to make a phono two and just bypass the additional gain stage and use it for a MM cartridge as well?
There isn't that much difference between the two -- The Pearl 2 does have more gain, but not like an additional gain stage ("pre-preamp") that some designs have. So it's not bypassable. (Is that a word?)

Anyway, the Pearl 2 has fantastic overload capability, and a very large range of input signal -- it can take the bulk of modern MM carts out there. As the previous poster mentioned, just load it properly and you are good.

It's a great sounding phono stage. You will not be disappointed.


Dzius - Great article! Thank you for the link.

Last edited by 6L6; 13th April 2012 at 08:57 PM.
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Old 13th April 2012, 09:09 PM   #28
PKI is offline PKI  United States
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Thanks, guys!
In this case it is better to make these jumpers/dip switches reachable without removing the preamp cover, right? And also two pairs of inputs? So you just switch the inputs, jangle the loads and you are set up.
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Old 13th April 2012, 09:18 PM   #29
6L6 is offline 6L6  United States
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Actually I wouldn't (and, for that matter didn't...) make the loading on a separate board or switch arrangement. But, I don't tend to change cartridges all that often. If you do, it might be a good idea.

There are provisions on the PCB to add loading capacitors and resistors. Just determine the suggested load for the cartridge, it's in the cart's manual, and adjust those components as necessary.

If you want to make it a switched arrangement, the DIP schematic shown above is quite nice.
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Old 29th July 2012, 04:24 AM   #30
6L6 is offline 6L6  United States
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Here is something worth mentioning -

I recently completed a headphone amp (the Objective 2 "O2") and was listening to the Pearl with it. Normal listing had the volume knob at about 20%, and it became uncomfortable around 30%. This is with the gain switch in the low position.

It's a very, very nice amp, but that's not the point of this post...

With the volume up all the way, and the gain switch in the the high position, the Pearl had no humm! None at all. In fact, the popcorn noise of the input fets (and way in the background at that...) was all that you could hear.


Last edited by 6L6; 29th July 2012 at 04:28 AM.
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