This is the version with 3 6N11 tubes. And as far as I can see identical to the Phenix. It looks and feels very well made. The separate power supply is a bit bulky but works well and keeps the size of the main box small and cute. The on/off switch is situated on the powersupply. Not very convenient because you can`t tuck it away somewhere under the desk. But is is sensible in respect to sound quality
Click here to download the full size of the above Circuit.
otherwise you would have to loop an extra 2 high voltage AC wires through the DC power cord. First thing I did was put a power cord with a euro-plug on the powersupply. The powersupply is full of hotmelt and double-sided foamtape, so nothing will resonate. I was looking for a real tube amplifier I could hook up to my modded Muse NOS 4xTDA DAC so I could listen to any difference or improvements in sound. I wanted something not too expensive (there goes the majority of HP-amps), using tubes that are current (so no Little Dot), not too expensive replacing and good for audio. I have come upon a batch of Philips Miniwatt tubes last month that had several ECC8* tubes. The $50 Indeed/Muse is a hybrid transistor that has severe high rolloff so there wasn`t much left out there. Then I stumbled upon this (item had no photo) in the Ebay store of a Chinese seller that has some nice pre-modded stuff. This turned out to be exactly what I was looking for. I wouldn`t opt for the G3 T7 with the ECC81 in the middle because that`s a bit of a wimpy tube. Even though the inside wasn`t exactly what was advertised (Wima MKP 10 turned out to be Ero 1860 polycarbonate which some find to be very good but I didn`t). The power switch seems to be a bit oxidized in storage because it wasn`t very reliable at first. I needed to flip-flop it a few times to work the first week. Yhe volumepot gives me some static because I modded my NOS DAC so it has no...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
characters left: