I added a tube preamp and before the BHK Signature arrived, it was solid state and sounded better because of the tube.
Remember that an amplifier architecture is based on two amplification stages: The first to raise voltage to the point where the second can raise the current that goes to the speakers to the proper level. With the tube in the preamp, there is still a transistor Vgain stage the first and no matter what Paul tried, even with FETs running at V bias levels, nothing sounded as good as the tube, according to Paul.
So if anything, the transistor Vgain amp stage will be hurting the sound in this scenario. Paul and most contemporary amplifier makers split this task into two: The first is a Voltage gain stage that only amplifies the magnitude of the incoming signal, but is too weak to drive the speakers directly. The second stage is the Current section that takes that high voltage and is able to control the output transistors or tubes to modulate the huge power supply and send the desired current to the speakers.
A tube has tremendous voltage amplification vs. So a single tube in the Vgain stage can do the same job as multiple transistors attempting to do the same.
Only some pages of the website have been closed. John Linsley Hood is widely regarded as the finest audio designer around, and pioneered design in the post-valve era. Now group the most important and it is the objective differences between lamps, field and bipolar transistor in Table 1. With today's software e. Let us know about it. The even harmonics second, fourth, and sixth produce "choral" or "singing" sounds. Call us on
The more transistors you have, the more distortion you get, so ideally you want to reduce the number of transistors to the bare minimum. An all-transistor amp will have some sort of transistorized Vgain stage. So what I was trying to point out was that, yes, you could put a tube in your preamp and get some benefits of the tube, but that now-beautiful signal will go right to your solid state amp where the transistorized Vgain will, unfortunately, mess it up albeit only a tiny bit.
In my case of the Streets the Vgain stage is an op-amp. Very common at the time 30 years ago but not the ideal as there are many transistors in it that can distort the sound. What was unique about my amp, however, was that the power supply used power regulators that kept the supply rails locked in and gave the amp the sweet sound it was famous for. The BHK hybrid concept is intended to eliminate that distortion source int he Vgain stage. But merely putting a tube preamp in front of an all-transistor amp will not do this. The audio amplifier is at the heart of audio design. Hood is responsible for numerous amplifier designs that have led the way to better sound and has also kept up a commentary on developments in audio in magazines such as the Grmophone, Electronics in Action and Electronics World.
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This is because our items are shipped from different locations. Spara som favorit. Skickas inom vardagar. Laddas ned direkt. The audio amplifier is at the heart of audio design. Its performance determines largely the performance of any audio system.
John Linsley Hood is widely regarded as the finest audio designer around, and pioneered design in the post-valve era. His mastery of audio technology extends from valves to the latest techniques.
This is John Linsley Hood's greatest work yet, describing the milestones that have marked the development of audio amplifiers since the earliest days to the latest systems. Including classic amps with valves at their heart and exciting new designs using the latest components, this book is the complete world guide to audio amp design.
Valve and Transistor Audio Amplifiers. CHAPTER Voltage Controlled Gain Systems. Digital Inputs. POWER SUPPLIES. High Power Systems. Solid State. Purchase Valve and Transistor Audio Amplifiers - 1st Edition. Print Book & E- Book. ISBN ,