I have been playing with a number of variations of the circuit as a free standing preamp, headphone amp, 321/729 replacements and as a potential active crossover, any and all of which may happen if there is demand. There has been strong interest in all of the threads and my bootstrap buffer preamp is up and running nicely - and for the moment it`s
Click here to download the full size of the above Circuit.
staying. The same board should also be very handy as a headphone amp - & I`ll be trying that next week. They are different animals in so many different ways and come from completely different design philosophies. . and these are only my own observations and conclusions - so Jiim & PD feel free to chip in. please! The starfish is definitely and very firmly in the Naim mold. and I love it for many things. lots of bass, drive and pace it really rocks. , but I can`t help feeling that it`s adding it`s own signature to the sound. It`s obviously based on maximizing the potential of the classic Naim 321 and 729 circuits and that means sorting a complex grounding scheme and multiple local regulators for power supply sensitive circuits. Accordingly it has a large and somewhat expensive BOM and is a fairly complex build. The Bootstrap on the other hand is so much simpler and follows a minimalist design approach with as few components as possible in the signal path - it also uses symmetrical power rails and minimizes ground points in the signal path. So the BOM is smaller, the build easier and much more economical - I`ll post a BOM in the next day or so. The result in the early listening is a cleaner sound with incredibly low noise and distortion, and I believe a much more truthful and honest presentation of the source material with uncanny staging and detail retrieval. It`s my expectation that I`ll end up using both, the Starfish in...
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: