Installing CVXOPT

1. Install Microsoft Visual C++ Build Tools

2. Install Intel Math Kernel Library

3. Install Python 3.6 (currently supported by cvxopt)

4. Install Python MKL --> Use PIP

5. Install numpy, scipy, cvxopt

Latest Update of My LM1875

Well, LM1875 is an interesting chip to play with. The number of components are so few that it is easy to build and less expensive if boutique components are to be used. I have bought complete Takman metal film resistor sufficient enough to build the amp, however, a friend of mine argued that I should use carbon film and he recommended his Allen-Bradleys for R-in and R-feedback of 22k. So in January 2015, I built the amp using combination of Takman REY 1k and two A-B 22k per channel. The result was satisfactory, but hey, I am still a human and never gets satisfied. :-D

So after these eight months of listening to A-B and Takman (carbon and metal film), it's time to rebuild the amp. This time, all resistors must be of Takman Rey Metal Film. PSU stays the same only swapping all the carbons with metal films.

In this setup, I replaced all carbon resistors previously used (those were Allen-Bradley) with metal film of Takman REY. PSU uses 2 x Nichicon FineGold 2200 uF and snubberized with 2 x ( Dale wirewound 0.47 ohm + WIMA FKP 220 nF ).

 For this system setup, I use LAN Cable Cat. 6 as I had access to the used ones. I can not comment on how this setup differs from or whether this sounds better than any other cables because I do not have those other so-called audiophile cables. :-)
My suggestion on using this twisted pair cable is to separate the twisted pairs. We can see that each pair consists of solid color cable and its pair with with color. Just aggregate all solid color cables into one and their respective pair into another one.