Phono Amps

Hounddog phono equaliser

After building the Scratch with success, it was time to build a simpler amp with active filtering (feedback). The design is from Fred "Dogstar" Nachbaur.

1. Introduction
2. Dog Feeding (shopping list)
3. Building and listening
4. Modification of the Power Supply (Dutch)

Tweety phono equaliser

After building existing projects of others it was time to design and build my own phono amp: Meet Tweety

1. Introduction, and building of Tweety
2. Tweety's Power Supply "Granny"
3. Listening experience and Parts lists
4. Tweety and the RIAA curve
5. Modification of the RIAA filter

Head-Eek, a MC headamp

• Building the Head-Eek MC headamp

McStep

A step-up transformer for my tube phono equalisers. It's function is equal to that of the Head-Eek but this is a passive component.

• McStep

Loekie phono equaliser

Tweety will be facing tough competition. That is to say, I've improved Tweety by using another RIAA filter setup, slightly better components and using a mu-follower instead of SRPP.

1. Introduction and schematics of Loekie
2. Construction of Loekie
3. My ideas for a regulated Power Supply (translation unfinished)
4. Listening (Translation Unfinished)

(In Progress)

Tom&Jerry pre-amplifier with phono

This project is an integrated pre-amplifier with a phono stage. The tubes used are of an "older" type, the 12SL7GT and the phono stage is a mu-follower and the pre-amp is based on the mu-stage.

1. Introduction to the Project
2. Jerry, the phono equaliser
3. Tom, the preamp (Dutch)
4. The Power Supply (Dutch)
5. Building, and listening session (Dutch)

Aair

1. Building a reverse RIAA filter
2. Background of reverse RIAA filter

Pre Amps

GainChooser

I needed a pre-amp; first a passive version with three inputs but later decided for an output buffer.

1. Introduction
2. Passive Pleasure: initial passive version
3. Designing the Buffer: upgrade with output line buffer
4. Plenty Power: Power Supply
5. Lazy Listening: Listening session with CloneKit

Amplifiers

Amplimo UL40-S2 tube amplifier

I bought the kit, built the amp, got the T-shirt. Read my story:

1. Introduction
2. Building (part 1)
3. Test and First impression (Dutch)
4. Modifications
5. Listening (Dutch)

My GainClone project, the "GeenKloon"

Read all about my own GainClone project named GeenKloon (translated: NoClone).

1. Introduction and Design
2. the Building process of GeenKloon
3. Listening and Future Plans
4. Clone Modding; improve the original (New)
5. Calculations and background on OpAmps
6. How to build a 12- or 24-step attenuator (Updated)

CloneKit

A pair of Gainclone monoblocks based on the boards of BrianGT.

1. Introduction
2. Construction
3. Listening

ForT

A Class T amp 5, designed by Jan Fredrikson

1. Intro
2. Building the Kit
3. Review
4. Mod: Adding the hi-power option
5. Adding a pre-amp

El Cheapo (modding project)

Modifying a cheap Chinese "El-84" amp and try to mod the cheap amp without breaking the bank. So actually it is not really a diy project, but more of an exercise.

1. Vanilla
2. Modding (New)
3. Build from Scratch

Headphone Amps

Headline, an OTL Headphone Amp

1. Project Intro
2. Designing an OTL Headphone Amp
3. Construction
4. Listening Conclusion

Cables

Interconnects

Make your own interconnects from fine Silver

1. Build the Interlink (I call it the Silverlink)
2. a battle between Silver and Graphite (review)

Preferred interconnects

Read here how to make cheap interconnects from quality Prefer microphone cable.

Preferred-Too

An enhanced version of the Preferred Interlink with better connectors and even better quality prefer microphone cable.

Preferred-Most

The most you can do with prefer cable. Good cable, very good connectors.

PJB (dutch)

Make your own interlink from Kimber PJB sold per length and 4 high-quality Intertechnik RCA connectors.

4Play

A braided diy interconnect based on a simple ingredient: 1.5 meters of UTP network cable which is taken apart (untwisted) and put together (braided) from 4 wires per interconnect.

AC-Power

Power Distribution:

Make you own power distributor

Power Cords:

• Conraadsel™: Make a super Power Cord for €11,-
• Blue_Snake: A do-it-yourself power cord in Blue
• Vlecht-Sneek: A braided power cable in multi-color for a very low price (dutch)
• Net-3: A very simple power cable (3-wires) in French style (dutch)

Braided Power Cords

The following power cords are made from braided wires and with heavy duty connectors.

• QuaDraad: The basic formula made from 5 wires
• QuaDruppel: (dutch) Based on the QuaDraad but with copper shielding

Let me splat him uncle scooby...

• Scoobidoo, a 5-wire cable with a french twist. Making this cable is dogs work. Contains 25m wire :-)

(Soon)

Power filters: (translation in progress)

• My first filter with two power outlets
• A second filter with 6 outlets, usable as power distributor.
• Some Technical Background on mains filters

Modifications of Hifi Components

• Replace the power cable of the Cdplayer with a better one.
• Modify the net entry of your amp with a euro-connector

Power in your House

We had our mains power system modified by an electrician. This part is probably not applicable to other countries than the Netherlands.

Spock

Listen long and prosperous .. A amplifier based on the 832A tube

1. Introduction

El Dorado

As a follow-up to the El Cheapo

1. Introduction

(Delayed)

TubeClone

A hybrid amp, clone with tube buffer

1. Introduction
2. Construction
3. Listening