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  1. #1

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    Default Yaqin mc-10l el34

    Just wanted to know if these amps are any good?

    You get what you pay for and these go for 400 shipped but is there anything you can do to spice them up?

    http://cgi.ebay.com/YAQIN-MC-10L-EL3...item483b214696

  2. #2

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    I noticed there are a lot of people talking about them while searching for my Yaqin stuff. I didn't read most of it but they seemed pretty happy. And that seller Tubestein has a great feedback list. Even the negatives are nothing worth worrying about.
    Vinyl, the final frontier...

    Avantgarde horns, 300b tubes, thats the kinda crap I want... :D

  3. #3

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    This seems to be quite good for the money after further researching info but because its an integrated amp does this mean there isnt any point adding a preamp

    I saw this pre and think its super cheap http://cgi.ebay.com/Xiang-Sheng-768A...item483b21489b

  4. #4
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    I have also heard nothing but good things. Some people switch out the tubes, the Yaqin's Chinese build quality seems to be better than most.

    Another way to think of it is that you couldn't build that amp with those parts and tubes for their MSRP.

  5. #5

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    There would be no reason to add a preamp.
    Vinyl, the final frontier...

    Avantgarde horns, 300b tubes, thats the kinda crap I want... :D

  6. #6

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    I was looking at some of the pictures for this amp, and I have never understood why some amps have connections for speakers that are 8 ohms 4 ohms and ground?

    some speakers for example are rated 8ohms but can go down to 2 ohms in certain conditions, and my questions is how does this relate to the settings of an amp?
    would I use 8ohm because this is the nominal impedence?

    This is why one of the reasons I actually went with my sunfire amp. It says that automatically handles 8, 4 and 2 ohms if necessary.
    Current HT setup
    Mains: B&W 804s
    Center: Polk CSi5
    Surround: Polk FXi3
    Sub: Velodyne DLS-3750R
    Receiver: Pioneer SC-07
    Amplifier: Sunfire TGA5200
    TV: Sony KDS60A2020
    DBP: Sony DBP-S350
    CDP: Pioneer DV-48AV
    Interconnect cables: SignalCable analog II
    speaker cables: SignalCable Ultra Speaker Cables Bi-wire

  7. #7

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    Tube amps are different in that there are (2) taps for the output transformer. One is for 8 ohm (nominal) and the other is for 4 ohm (nominal). This is not how Soild State amps work, they don;t have output transformers.

    Two completely different types of amplifier architecture. The (2) taps are wired into the output transformer differently based on the anticipated load. Many tube amps don;t like loads much below 4 ohms, but it really depends on the output transformers. That why they say "it's all about the iron" when referring to tube amps. The "iron" being the output transformers. Cheap transformers or incorrect transformers can seriously hinder the performance and sound quality of a tube based amplifier.

    H9
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass

    Pass Aleph 30; Eastern Electric Mini Max; Adcom GDA600; MIT S3/Z Pc; SDA 1C; Squeezebox; Tubes add soul!

  8. #8
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    You would be connecting your speakers to the amp based upon their nominal impedance rating.

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    If the speakers were 5 or 6ohm then what connections would you use?

  10. #10

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    Quote Originally Posted by polkfarmboy View Post
    If the speakers were 5 or 6ohm then what connections would you use?
    Whatever the owners manual tells you.

    Typically you could either one.

    H9
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass

    Pass Aleph 30; Eastern Electric Mini Max; Adcom GDA600; MIT S3/Z Pc; SDA 1C; Squeezebox; Tubes add soul!

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    In the case of the SDA 1C's, should I use the 4 ohm taps? Seems like I've read that on here somewhere.

  12. #12

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    On SDA's the taps sound different. Unless the manufacturer gives clear advice not to then use the combination that sounds best.
    Vinyl, the final frontier...

    Avantgarde horns, 300b tubes, thats the kinda crap I want... :D

  13. #13

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    I tried the amp on both the 4 and 8 ohm taps and I didn't notice any difference in sound quality. Kept it on the 4 ohm taps. The amp has a warm, rich tone which I find very appealing. Very good bass response. Highs are not strained. Midrange simply sounds fantastic. Virtually dead silent background noise. The amp never strained at higher volumes. Later in the week I hooked it up to the 1.2TL's to see how it drove them. Again, no lack of power and the sound coming out of these speakers sounds better than I've ever heard. In fact the amp sounds so good to me that I just bought another one brand new (bias adjustments are on the outside). I'll replace the tubes with Russians for sure but I want to listen to it with the stock Chinese tubes first just out of curiosity.

    Forgot to mention that I got a nice surprise from the seller. I paid for the 7-10 business day delivery and he said he would send it to me express. He shipped it out yesterday and I get it next Tuesday.
    Last edited by michaeljhsda2; 07-09-2010 at 09:22 AM.

  14. #14

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    Damn you! :) I'm trying to hold off spending any more money on gear as I've bought a lot lately. I don;t need this amp in the slightest but I want an EL34 based amp to try out. I already have 2 amps for my office rig.

    I've been looking at this particular Yaqin and with your glowing reviews and Madmax's glowing reviews of the 300B based Yqin he just bought, I'm not sure I can hold out much longer ;).

    Keep the impressions coming.

    H9
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass

    Pass Aleph 30; Eastern Electric Mini Max; Adcom GDA600; MIT S3/Z Pc; SDA 1C; Squeezebox; Tubes add soul!

  15. #15

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    ^^ :) ^^ I'm selling off my SS gear and I'm not looking back :D

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    I just did a quick look at Ebay and it seems currently the seller Tubestein is no longer offering it for $399BIN w/free shipping.
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass

    Pass Aleph 30; Eastern Electric Mini Max; Adcom GDA600; MIT S3/Z Pc; SDA 1C; Squeezebox; Tubes add soul!

  17. #17

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    I didn't buy it from Tubestein. Can't remember the sellers name and my work computer won't let me go to Ebay. I can let you know later this evening. I think it cost around 432 shipped and he gave me the upgraded 3 day delivery for free without my asking.

  18. #18
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    Here is one for $439 including free shipping; and they claim it comes with Russian tubes instead of Chinese ones...

    http://cgi.ebay.com/New-YAQIN-MC-10L...item4150ef3294

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    Gonna roll some NOS Russian military 6P3S-E's and NOS 6N1P's in the new MC-10L tonight. The other MC-10L I bought on Agon already has the 6P3S-E's in it so I just need to replace the 6N1's with 6N1P's. These amps already sound fantastic so I'm curious to see if it gets better.

  20. #20

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    The older 6N1P-EV's from the 60's and 70's are a very nice tube. I don't care for the more recent versions. They don't compare to NOS tubes like Amperex, Mullard, Valvo, Telefunken, RCA, etc. But not a bad tube and very inexpensive.

    I had a dozen 6N1P's from the early 70's but I sold most of them and kept a couple pairs for myself. Look for those if you can. I have a pair from 1967 which are really nice too.

    H9
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass

    Pass Aleph 30; Eastern Electric Mini Max; Adcom GDA600; MIT S3/Z Pc; SDA 1C; Squeezebox; Tubes add soul!

  21. #21

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    I'll be on the lookout for those that you mentioned.

    On a side note, I bought the tubes from Jim McShane...excellent person to deal with.

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