21st Oct 2016
A great piece that will ring true for anyone who has a passion for
do-it-yourself audio. Based on an editorial that was written over 30
years ago, it shows that some things in this hobby change, and some
things never will!
6,835 Views | Read More »
20th Jun 2012
Do-It-Yourself audio is a great activity. Many major audio
components are easily constructed and made to perform as well or better
than what we see in the stores and at considerable savings. The process
is educational and therapeutic and there are few greater satisfactions
than listening to music on equipment you have built yourself.
159,099 Views | Read More »
14th Dec 2011
In the first L’Amp article, we built-up a simple Class A amplifier
using a not-quite unobtainable Static Induction Transistor. It’s a nice
amp, but it doesn’t have a lot of power or voltage gain. In this
little vignette, we’ll examine a simple option for improvement.
36,231 Views | Read More »
14th Nov 2011
I’m not a real amplifier designer, and this is not a real article
about a wicked-good sounding, super-simple amplifier anyone can build
using light bulbs and alien technology. Now that the pressure’s off, we
can have a little fun.
71,973 Views | Read More »
17th Aug 2011
In the BA-1 and BA-2 projects we constructed two different amplifiers
using very similar input and voltage gain stages (aka the “front
ends”), but used them to drive two different Class A Mosfet follower
output stages. Now we are going to flip this approach and begin
exploring some different front end designs capable of driving these and
other follower output stages.
111,276 Views | Read More »
29th Mar 2011
Gain structure is a concept that gets talked about a lot in pro
audio, but most home audio folks have never heard of it. Understanding
gain structure can help you get the cleanest signal possible out of your
system and avoid some nasty things like noise and clipping.
138,817 Views | Read More »
9th Feb 2011
It's the fourth year of the Burning Amp Festival and we held it at
Fort Mason, the site of the first event. Read on to experience the
sights and sounds at the show and find out why we can never have enough
21,817 Views | Read More »
23rd Oct 2010
You’re a Macho Man. You have all the gadgets which real Macho Guys
absolutely must have, A CD player, a transport with a separate DAC, and
you also just finished making the best amps money can buy. Recently you
made a dedicated media PC, which is dead silent and as capable as HAL
9000! And most importantly, you’re hanging with right Macho Bunch, at
the right place, diyAudio, sharing ideas and the newest tips on how to
reach Audio Nirvana.
Wait a minute! You have a Wife, or even a Mom? And they aren’t always in
the mood for your torture of loud music every day? So... you really
aren't so macho, and you need a Volume Control!! Here's all that you
need to know ...
38,725 Views | Read More »
3rd Sep 2010
Recently, Nelson Pass offered a prize on diyAudio for the best
suggestion for the next Pass DIY project, the prize being the project,
and this article being that. Here is the Zen I/V Converter, an elegant
and versatile companion for your DAC.
68,020 Views | Read More »
16th Jul 2010
"There they were, dozens of pairs of beady tweeter eyes, flared
midrange nostrils, gaping woofer mouths – all daring us to say
something, anything, good. I was trapped in a room surrounded by forty
plus pairs of speakers, all waiting to sing and be judged. Some of them
hulking as big as a Frigidaire, some so small that two would fit in your
hand, others looked like fish or sewer pipes, race cars, Uncle Sam or
even a puppet piano face. No kidding. Fortunately they didn't all sing
Want to know what it's like to be in a hotel meeting room surrounded by
more than 40 pairs of handmade speakers? Read on...
18,929 Views | Read More »
21st Apr 2010
SY decided to just chuck his phono preamp and build a new one from
scratch. The old one, a hybrid tube-FET cascode design, suffered from
less-than-optimal noise and distortion, insane power supply sensitivity,
and OK-not-great RIAA conformance, so the new one is designed to be
better in all those respects. This article describes the theory, design,
and construction of an excellent phono preamp.
260,814 Views | Read More »
21st Apr 2010
There is a lot of information available for designing audio circuits,
but precious little on interconnecting those circuits into a total
audio system to achieve maximum performance.
This article focuses on audio system design for the DIY enthusiast
implementing a system for home use and will most benefit the person
constructing his or her own equipment.
187,908 Views | Read More »
1st Feb 2010
This article follows the design process from theory to measurement of
a loudspeaker engineered to be driven by a low powered single-ended
triode amplifier. The author has a broadcast background, so accuracy was
a key requirement. This is not a loudspeaker designed to sound “nice”,
it is a loudspeaker engineered to sound “right”.
182,977 Views | Read More »
1st Feb 2010
Many of you have never built an amplifier, and this article is
intended to get you to do it.
One of the biggest hindrances is the hesitation to take that leap into
building your own electronics. ... The solution: choosing something
really easy but satisfying – a simple but exotic project with low
barriers and cheap satisfaction.
188,441 Views | Read More »
14th Nov 2009
We failed again at Burning Amp 2009: No amplifier actually burst out
in flames, but one did smoke a lot...
Mark (Variac) was nervous. So was everyone around him. Burning Amp 2009
had arrived... What would the weather be, would we have enough food and
enough tables? But most importantly: would there be enough interesting
visitors with interesting stuff to make it a success?
Read on and find out ...
16,021 Views | Read More »
11th Nov 2009
The Burning Amp Festival happens every end of year in San Francisco.
Do-it-yourself audio enthusiasts from all over gather to listen to talks
and equipment demos, show off their projects, and rub shoulders with
the rich and famous. Having a very large collection of audio parts and
diminishing storage space, I seem to have fallen into the role of Santa
Claus there, distributing components and cheap advice, with white hair,
beard and a large elf (Colin Pass) to add verisimilitude.
This year we also brought a batch of unfinished amplifiers - chassis,
connectors, transformer, power supply capacitors and Mosfet output
As we were handing these out, it became apparent that a suitable design
for their use was a requirement, so the notion of the Burning Amps was
born, a series of Class A designs which run fearlessly hot in the
pursuit of quality amplification.
Here is the first one.
111,592 Views | Read More »
31st Aug 2009
In Burning Amp 1 we examined an amplifier circuit designed to
complement the hardware we gave away to some attendees at last October's
Burning Amp Festival in the San Francisco bay area. This first design
centered on a power output stage having of four banks of parallel N
channel Mosfets. It was a single-ended Class A amplifier which delivered
high quality sound with only local feedback.
Burning Amp 2 will use virtually the same front end and power supply but
coupled to complementary banks of N and P channel power Mosfets used as
followers in a push-pull Class A configuration.
Introducing ... Burning Amp 2!!
88,047 Views | Read More »