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Does anyone know the resistance value of the volume potentiometer on this amplifier? Is it 20K ohms or 50K ohms? I want to replace it with an ALPS potentiometer. I want to buy the volume potentiometer first, and after the parts arrive, I will use a cutting machine to cut off the old...

My drop AAA 789 has been received for 20 days. It sounds very clean. I like it very much and bought a better power supply gst60a24-p1j-24v for it.

It should be this. 16PX3300MEFCG412.5X20 https://www.digikey.com/en/products/detail/rubycon/16PX3300MEFCG412-5X20/3134490

Looks like this http://www.sunny-et.com/productdet_170.html

It is a Chinese volume pot branded as "SANNI"

I plan to DIY use ALPS RK09L to replace it,It costs less than $5, I can directly rotate the metal rod to adjust the volume.I don't care about the appearance. https://tech.alpsalpine.com/prod/e/html/potentiometer/rotarypotentiometers/rk09l/rk09l_list.html

https://forum.hifiguides.com/t/massdrop-thx-aaa-789-linear-headphone-amplifier/32/424 https://drop.com/buy/drop-thx-aaa-789-linear-amplifier/talk/2666814 You are right. My aaa789 has just been shipped. I regret buying it a little.

I think it is better to replace the potentiometer, and it is best to buy the ALPS potentiometer.

I just bought thx AAA 789 amp for $239. Thank you.

Thx AAA 789 and SH-9 have almost the same price in China, about $280. My headphones are dt880 250O and AKG K702. Should I choose thx aaa789 or SH-9 without considering the price?

Thx AAA 789 and SH-9 have almost the same price in China, about $280. My headphones are dt880 250O and AKG K702. Should I choose thx aaa789 or SH-9 without considering the price?

I currently live in China, so I need an additional $60 transshipment and $30 tariff. I want to spend as little money as possible to get it.

Well, I missed the price of $199. If THX AAA 789 Amp is priced at US$199, can Everybody notify me by email? Email: [email protected]

I have opa1612 *2, 220ohm resistors *2 1k resistors *2 560p capacitors *4 How to modify it? Thanks for your help.

@amirm Hello. The headset I use is DT880 250O. Can you recommend me a better portable product than NX4DSD?