|
Line Stage Articles |
||
|
|
||
| Home Articles page |
||
|
These articles are excerpts from articles published in the February and March 2003 and May and November 2004 issues of audioXpress Magazine. They follow the journey from a simple classic transformer output line stage to the development of the differential Single-Ended-Triode bridged parafeed version of the Line Stage. |
||
|
|
||
| Chapter 1 | It all started simply enough - I needed a new line stage for my own use. On this first leg of the journey I developed a single-ended transformer output line stage. | |
|
|
||
| Chapter 2 | I was learning a lot and having fun so I decided to continue experimenting. The question now was, which way to go? The obvious candidates were differential push-pull or single-ended parafeed. I chose single-ended parafeed. | |
|
|
||
| Chapter 3 | I have found that it is a good idea to build a prototype of a circuit on a perforated board before etching the printed circuit board. You can easily mount PC components and instead of land patterns, you have the flexibility of point-to-point wiring that is easy to change if needed. I think of them as a small chassis. | |
|
|
||
| Chapter 4 | I had pretty
much taken the SET Line Stage to the limit of its capability. While
the result was excellent, I knew that I could improve on it. I had heard
several push-pull line stages that sounded pretty good so I wanted to
experiment with a differential topology. |
|
|
|
||
| Chapter 5 | I had finished the development of the Line Stage and it was time to create a power supply. I had used a standard choke-input power supply for most of the development. That supply was okay but I wanted something special to support the superb sonic qualities of the Line Stage. | |