I built the ANK L3 Phono amp. Actually its a clone but loaded with premium parts. It works great. No noise and sounds good but I need more gain. Is there anything I can do to this circuit to increase the gain a little? I am running a DV20X2 High output cart and it requires I turn my amp up to 3/4-7/8 volume to get listening levels where I like them. My previous phono amp had adjustable gain and was a fair bit louder. I have it loaded with all factory recommended values. Is there any resistor changes or something similiar I can change to get more gain out of it?
There’s about 41 dB of gain there, allowing -20 dB for the RIAA. Should be enough. What’s the sensitivity of the next stage? And the cartridge output?
That's the problem with some high output MC's. They have less output than a typical MM cartridge, and leave you in "no man's land" output wise.
Get the "Low" output version of your cartridge, and a 1:20 SUT. That will be the end of your volume issues. 🙂
Or, build one of those Zhili Audio EAR834p clones. They have a lot more gain.
jeff
Last edited:
Depending a bit on the following stage, but in general I find that two 12AX7/ECC83 is kinda mandatory if you want about 1Vrms of output. Or use pentodes instead.
If we want to go a little less purist, we can put the first or 2nd stage in cascode with a NPN or Mosfet.
If you dare to lower the plate voltages of the 83 & 88 for higher Ra's and hence a little bit higher gain.
Marginal though, as by #2.
Marginal though, as by #2.
You could try installing something like this
https://www.aliexpress.com/item/100....order_list.order_list_main.11.3e1e180242swu7
Using your cart outs as balanced, will give around 2dB of gain.
Cheers
https://www.aliexpress.com/item/100....order_list.order_list_main.11.3e1e180242swu7
Using your cart outs as balanced, will give around 2dB of gain.
Cheers
Feast or famine with these phono preamps and carts. I have seen just a few phono preamps, a volume control which made me wonder if that is a good idea. Certainly not to increase gain, but likely only for attenuation.
I am also with the idea of getting the low output model and adding a transformer.
I am also with the idea of getting the low output model and adding a transformer.
I’m also wondering how that ECC83 is going to like 100R in parallel with its grid leak resistor.
I see that, but that won't have any effect on gain, which is the issue here.
I see the OP @jwags81818 has started another thread on this topic anyway?
jeff
Last edited: