Fidelity
100+ Head-Fier
- Joined
- Jan 30, 2005
- Posts
- 276
- Likes
- 10
The OPA2604 is used in the headphone amp section, the OPA2134 is used in the DAC buffer section which passes to both the head amp and RCA out.
At stock the Aune is very good.
You will require 2x OPA627 (officially sourced genuine ones are expensive, ebay flooded with fakes) and the correct dual to mono DIP8 adaptor to allow you fit dual OPA627 into a single DIP8 socket, which op-amp you replace is up to you, experiment with different op-amps in different positions to decide which combo sounds best to you.
OPA2132P, or the superior OPA2227P (IMO) could replace the stock OPA2134, dual AD744's in the headphone section replacing the OPA2604 sounds fantastic to me.
I tried the OPA2107 in both positions for a while now, I'm disappointed overall it just didn't sound right at all in the Aune over the stock op-amps.
At stock the Aune is very good.
You will require 2x OPA627 (officially sourced genuine ones are expensive, ebay flooded with fakes) and the correct dual to mono DIP8 adaptor to allow you fit dual OPA627 into a single DIP8 socket, which op-amp you replace is up to you, experiment with different op-amps in different positions to decide which combo sounds best to you.
OPA2132P, or the superior OPA2227P (IMO) could replace the stock OPA2134, dual AD744's in the headphone section replacing the OPA2604 sounds fantastic to me.
I tried the OPA2107 in both positions for a while now, I'm disappointed overall it just didn't sound right at all in the Aune over the stock op-amps.