TDA1541 USB DAC Components Upgrade

Previously, I had built a USB DAC using TDA1541A S1 and GIC LPF here and I think this is the best implementation of TDA1541 DAC IC I've ever made.

The TDA1541 DAC in general, sound more focus on mid-range and I never thought that my TDA1541 DAC built can sound dynamic, open and details.

Then, I curious what improvement that could be made for this DAC to sound even better.

So in this post, I will try to replacing few components to the higher grade and let's see if this upgrade are worth for every money spent.

The ACA - Amp Camp Amplifier Built

The ACA amplifier was initially designed for beginner in DIY audio so they can start to build a discrete class A amplifier. And because of this reason, so the components and the design should be as simple as possible. This simple approach always shared the same philosophy as the designer itself, the Nelson Pass who own the Pass Labs and the First Watt.

The ACA amplifier is using only 2 transistor in the signal path. The JFET for voltage amplifier and MOSFET for current amplifier. Interestingly this amplifier can be powered with a pair of SMPS laptop power supply.

I heard from others that have tested it, this amplifier sound great.

So, since I already have the ACA PCB on hands, why don't I start building this amplifier?

I am also a beginner:)