Monday, 28 December 2015

EL84 Guitar amplifier new release

New release of our 18W Guitar amplifier, Made in double layer proponete circuit board.
3 x 12AX7 
2 x EL84
Selectable Marshall style  or Fender like tone stacks 

EL84 and 12AX7 on PCB

Saturday, 10 October 2015

EspritAudio EL84 Guitar Tube Amplifier Protototype

First Classic Guitar  vacuum tube amplifier from ESPRITAUDIO

First prototipe on PCB is done!!!

Custom Power Transformer suitable for My GY50 Hybrid Power Tube Amplifier 4 x 12AX7 + BJT Power Stage

Custom power Transformer  for my GY50 hybrid Amplifier clone is ready!!

Trasformatore Alimentazione Hi Fi 300VA 

Primario 230Vac

1 x 230Vac x anodica
2 x 67Vac x stadi finali BJT
2 x 12.6vac x filamenti 12AX7

Schermo elettrostatico primario/secondari

Friday, 25 September 2015

Soundmachines NS1nanosynth portable analog modular synthesizer integrated Arduino platform USB connectivity


Analog Synthesizer 

"We at soundmachines thought about a simple and cheap platform that will transport the main characteristic of a modular analog synthesizer in a small and friendly format, to be well recognised by musicians,  makers and tinkerers worldwide. A small, but  loyal to its roots, instruments of sound creation. With a digital platform added as a bonus."
                                                                                                    from NS1nanosynth creator

Tutorial Vodeos:


Monday, 21 September 2015

18W EL84 - GZ34 Tube 12AX7 Guitar Amplifier Project

Guitar Head Amplifier 18W  using EL84 pentode and old style octal GZ34 rectifer 

18W Marshall Style Amplifier

Chicken Head Knobs 

Tuesday, 16 June 2015

DIY DC/DC Dual Boost regulated Power Supply for High Voltage Tube VAS

In relation to DIY Hybrid amplifer the first step is to obtain the High Voltage for tube's anode supply and the low voltage for heaters.

Sometimes, if not always, fora a 100W amplifier you have a double sec 150-300VA  36-0-36Vac power transformer only.
Using this board you can adjust the  needed voltage for tube stage starting from your transformer.
Without use any voltage doubler and linear regulators.

The Following image shows how the Double Boost works.
From unregulated  +55/0/-55Vdc the circuit gives at his output the needed voltage, able to supply the anode current for a tube stage.
For example you can obtain +90/0/-90Vdc and 6.3Vdc for the heaters..

Friday, 5 June 2015

DIY Do It Yourself KIT Headphones Hibryd 0fb Class A Tube Amplifier Using Boost Coverter Power Supply DC DC Coverter output 190Vdc 6.3Vdc starting from 12-24Vdc

Zero Feedback 100mW Hi Fi Tube - BJT Amplifer using Hi Voltage Power Supply by DC DC Boost Converter.

Boost and Buck Board provide to give:

VAS Tube Supply: 190Vdc
Curret Buffer Amplifer Supply: 30Vdc
Heater voltage 6.3Vdc by Step Down converter

All voltages obtained starting from 12-24Vdc power supply, as Desktop power supply or Battery

DC DC Step Up and Step Down Board

Monday, 11 May 2015

High End Tube Headphones Amplifier - Goodnight Project

One implementation of my 
"Goodnight "
Tube Headphones Amplifer

Connect Your Mind to Modular Synthesizer using soundmachines BI1brainterface

is proud to show

which produces  the first Mind Connected modular Synt component


BI1brainterface and Neurosky MindWave Mobile headset


"We wanted to create something that doesn’t require the use of a computer, and brings immediacy and easy of operation in this upcoming technology"

Tuesday, 28 April 2015

My Personal GY50 Hardware Project Development PCB

My GY50
Made in August 2004 on Aloia's Project

Current Amplifier Output Power Stage:

VAS stage 12AX7 - ECC83:

Saturday, 11 April 2015

Gem Super Deluxe 20 Tube Guitar Amplifier Push Pull 6L6 12AX7 driver

New Vacuum Tubes for GEM Super Deluxe 20, great 60's italian guitar amplifier
Sovtek Matched Pair 6L6 power tubes and 3 x 12AX7 for 20W

Point to point old stile  mounting

6L6 matched pair and 12AX7

Wednesday, 14 January 2015

Sony PS-X65 DD Turntable Repaired Restored

Sony PS-X65, trouble of drop point solved.
IC103 defective, once replaced the turntable plays well!!

Signals on pin 1 and 4 weren't correct, Luckily t was only the 4069 IC...
Faulty Component, datacode 79 48

My replacement..NOS MC14069UB datacode 80 36