Updated:
19 May 2009
Amplifier Articles in Electronics World & Elektor |
Updated: |
I have given some of them my own rating as to worthiness; if you disagree please let me know. In a few cases I have put down my thoughts on their value... click on Comments.
Most of my articles up to 2004 are now available in one handy volume: Self on Audio The perfect gift for all the family.
Preamplifier and Power Amplifier Articles in Wireless World/Electronics World: chronological order.
This is a so far incomplete (but growing) collection of the significant EW audio articles. If nothing is shown for a year this simply means I haven't got round to it yet.
 First-rate.Innovative |  One of mine.As good as I can make it. |  Competentbut unexciting |  Misleading orpointless |  Just plain wrong!Sorry but there it is. |
| Repeat offenders have colours assigned to their names. | ||||
| Subject | Author | Issue | Page
| 1952
| Negative-Feedback Tone-Control | Peter J Baxandall | Oct | 1952 | p402 | Comments
| 1965
| Transistor High-Quality Audio Amplifier: Part 1 | J Dinsdale | Jan | 1969 | p2 | Comments
| Transistor High-Quality Audio Amplifier: Part 2 | J Dinsdale | Feb | 1965 | p68
| A Feedback PWM Audio Amplifier | Turnbull & Townsend | Apr | 1965 | p160 | Comments
| 1966
| High-Performance Transistor Amplifier (20W) | Arthur Bailey | Nov | 1966 | p542 | Comments
| High-Performance Transistor Amplifier (preamp section) | Arthur Bailey | Dec | 1966 | p598
| 1967
| Efficiency Considerations In a Class-D Amplifier: Part 1 | Turnbull & Townsend | May | 1967 | p154 | Comments
| Efficiency Considerations In a Class-D Amplifier: Part 2 | Turnbull & Townsend | June | 1967 | p214
| 1968
| 1969
| A Simple Class A Amplifier | J Linsley Hood | Apr | 1969
| Quasi-Complementary Output Stage Modification | I M Shaw | Jun | 1969 | p265
| 1970
| 15-20W Class AB Audio Amplifier | J. Linsley Hood | June/July | 1970
| Ultra-low Distortion Class-A Amplifier | L. Nelson-Jones | Mar | 1970
| 1971
| A New Approach to Class-B | P Blomley | Feb | 1971 | p57
| 1972
| Low-noise Audio Amplifiers | H P Walker | May | 1972 | p233 |
1973
| Audio Power Amplifier (A+) | P L Taylor | June | 1973 | p301
| 1974
| 1975
| A High-Quality Compressor/limiter | Douglas Self | Dec | 1975 |
1976
| Transistor Driver for Valve Amplifiers | Seth Berglund | Apr | 1976 | p36
| An Advanced Preamplifier (MRP1) | Douglas Self | Nov | 1976 | p |
1977
| Non-linear Distortion in Audio Amplifiers 1 | Matti Otala | Jan | 1977 | p43
| Distortion in Low-Noise Amplifiers 1 | Eric Taylor | Aug | 1977 |
Distortion in Low-Noise Amplifiers 2 | Eric Taylor | Sept | 1977 |
Additions to the Advanced Preamplifier | Douglas Self | Oct | 1977 |
1978
| A New Distortion Measurement | R A Belcher | May | 1978 | p36
| Loudspeaker System Design: Part1 | Siegfried Linkwitz | May | 1978 | p52
| Audio Power Amplifier Design: Part 3 | Peter Baxandall | May | 1978 | p83 |
Current Dumping: Does it Work? Part 1 | Vanderkooy & Lipshitz | June | 1978 | p38
| Loudspeaker System Design: Part2 | Siegfried Linkwitz | June | 1978 | p67
| Valves vs Transistors | James Moir | July | 1978 | p55 |
Audio Power Amplifier Design: Part 4 | Peter Baxandall | July | 1978 | p76 |
Current Dumping: Does it Work? Part2 | Vanderkooy & Lipshitz | July | 1978 | p83
| Audio Power Amplifier Design: Part 5 | Peter Baxandall | Dec | 1978 | p53 |
1979
| A High-Performance Preamplifier (MRP4) | Douglas Self | Feb | 1979 | p40 |
Audio Power Amplifier Design: Part 6 | Peter Baxandall | Dec | 1978 | p69 |
1980
| Audio Gain Controls:Part 1 | Peter Baxandall | Oct | 1980 |
Audio Gain Controls:Part 2 | Peter Baxandall | Nov | 1980 |
1981
| Measuring TIM in Audio Amplifiers | Antoniazzi et al | May | 1981 | p45
| Cartridge Alignment Gauge | R Gilson | Nov | 1981 | p49
| 1982
| Simple Power Amplifier | Peter Wilson | Apr | 1982 | p56
| 80-100W MOSFET Audio Amplifier: Part 1 | John Linsley-Hood | June | 1982 | p40 |
| 80-100W MOSFET Audio Amplifier: Part 2 | John Linsley-Hood | July | 1982 | p63 |
| 80-100W MOSFET Audio Amplifier: Part 3 | John Linsley-Hood | Aug | 1982 | p29 |
| Class S | A Sandman | Sept | 1982 | p38
| Modular Preamplifier: Part 1 | John Linsley-Hood | Oct | 1982 | p32
| Audio Oscillator with Toneburst | J Tiernan | Oct | 1982 | p59 |
| Binaural Recordings & Loudspeakers | J H Buijs | Nov | 1982 | p39 |
| Modular Preamplifier: Part 2 | John Linsley-Hood | Nov | 1982 | p60 |
| How Will CD Affect Audio Design? | R Harcourt | Dec | 1982 | p73
| 1983
| Modular Preamplifier: Part 3 | John Linsley-Hood | Jan | 1983 | p46 |
| Interface Intermodulation | R R Cordell | Feb | 1983 | p30 |
| Modular Preamplifier: Part 4 | John Linsley-Hood | Feb | 1983 | p79 |
| High Power High Quality Amplifier Using MOSFETS | E Borbely | Mar | 1983 | p69 |
| Aspects of Audio Amplifier Design | Y Miloslavsky | July | 1983 | p54 |
Current Dumping Review: Part 1 | M McLoughlin | Sept | 1983 | p39
| A Precision Preamplifier (MRP10) | Douglas Self | Oct | 1983 | p31 |
Current Dumping Review: Part 2 | M McLoughlin | Oct | 1983 | p35
| 1984
| Compensated Active Summer | A M Soliman | Feb | 1984 | p58
| 1985
| Audio amp symmetry | John Linsley-Hood | Jan | 1985 | p261
| 1986
| Not a good year for audio articles.
| 1987
| Crossover Distortion in Class-B amplifiers | Erik Margan | July | 1987 | p739
| Moving-Coil Head Amplifiers | Douglas Self | Dec | 1987
| 1988
| Science & Subjectivism: Pseudo-science in Audio | Douglas Self | July | 1988
| 1989
| Feedback & FETs in audio amplifiers | Ivor Brown | Feb | 1989 | p123 |
| A/AB mosfet Power Amplifier | John Linsley-Hood | Mar | 1989 | p261
| PSU & protection for for A/AB mosfet Power Amplifier | John Linsley-Hood | May | 1989 | p524 |
| Designing Low-noise Audio amplifiers | Wilfried Adam | June | 1989
| Microcomputer- Controlled Preamplifier | Peter Kruger | June | 1989 | p584 | *
| Solid-state Audio power: History. | John Linsley Hood | Nov | 1989 | p1042
| Solid-state Audio power: Blomley, Current Dumping, Class-S | John Linsley Hood | Dec | 1989 | p1164
| 1990
| Solid-state Audio power: gain stages. | John Linsley Hood | Jan | 1990 | p16 |
| Audio power, FETs and feedback. | Ivor Brown | Apr | 1990 | p343
| Audio Preamplifier design: 1 | John Linsley-Hood | June | 1990
| Audio Preamplifier design: 2 | John Linsley-Hood | July | 1990
| Variable-Slope Low-Pass Filter | Reg Williamson | July | 1990
| Audio Mixer design | Richard Brice | July | 1990
| Audio Preamplifier design: 3 | John Linsley-Hood | Aug | 1990
| Sound Mosfet Design | Douglas Self | Sep | 1990 | p760 | Comments
| Reducing Crossover distortion. | Michael McLoughlin | Oct | 1990 | p879 |
| Distortion from power supplies | Greg Ball | Dec | 1990
| 1991
| Inside Mixing Consoles | Douglas Self | Apr | 1991
| Digital amplifier developments | Andy Gothard | Jul | 1991 | p554 |
| Transistor-driven valve amplifier | John Linsley Hood | Aug | 1991 | p676 |
| Who designed this? | Dr Aubrey Sandman | Sep | 1991 | p788 |
| 1992
| Opto-bias for better power amps | Ivor Brown | Feb | 1992 | p107
| Sound Model for Audio Design? | Ben Duncan | April | 1992 | p332
| VCAs | Malcolm Hawksford | April | 1992 | p338
| Microphone preamplifier | Tim McCormick | May | 1992 | p402
| 200 watt Audio amplifier | Andrew Hefly | June | 1992 | p454
| Golden Ears Hypothesis | Ben Duncan | June | 1992 | p466
| Digitally Controlled Preamplifier | Chris Miller | Sept | 1992 | p718 | *
| PSU Regulation & Audio Performance | Ben Duncan | Oct | 1992 | p818
| 1993
| Opamp Tests. | Ben Duncan | Jan | 1993 | p42
| Integrated Audio amplifier. | John Linsley Hood | June | 1993 | p454
| Audio Power Amplifier | Marco Corsi | July | 1993 | p547 |
| Microprocessor-Controlled audio Preamplifier | Martin Eccles | July | 1993
| Solid-state Audio Switching | Mike Meechan | July | 1993
| Audio power chip review. | Ben Duncan | Oct | 1993 | p804
| Distortion In Power Amplifiers: Part 1 of 8 | Douglas Self | Aug | 1993 |
| 1994
| Square-Law amplifiers | Michael Williams | Jan | 1994 | p82 |
| Distortion In Power Amplifiers: Part 8 of 8 | Douglas Self | Mar | 1994 |
| Low Distortion Audio Oscillator | Ian Hickman | May | 1994 | p370 | *
| Common-emitter power amplifiers | Douglas Self | Jul | 1994 | p548 |
| High speed Audio power. | Douglas Self | Sep | 1994 | p760 |
| Audio Amplifier with Feedforward. | Giovanni Stochino | Oct | 1994 | p818 |
| Better Audio from Non-complements? | Bengt Olsson | Dec | 1994 | p988 |
| 1995
| Ironing out Distortion Part 1 (Part 2 Jul 97) | Edward Cherry | Jan | 1995 | p14 | *
| Piggy-Backing Audio ICs | Ben Duncan | Jan | 1995 | p26
| Between amplifier and speaker. | Ivor Brown | Feb | 1995 | p114 |
| Distortion off the rails | Douglas Self | Mar | 1995 | p201 |
| Fast power amplifier for audio | Ian Hegglun | Mar | 1995 | p240 |
| Low Distortion Attenuator | John Linsley-Hood | Apr | 1995 | p320 | *
| Simulated Attack on Slew Rates | Ben Duncan | Apr | 1995 | p303
| Fets versus bjts | Douglas Self | May | 1995 | p387 |
| Delayed Audio Signals | Ben Duncan | May | 1995 | p391
| Trimodal audio power: Part 1 | Douglas Self | Jun | 1995 | p462 |
Power ICs On Trial | Ben Duncan | Jun | 1995 | p477
| Trimodal audio power: Part 2 | Douglas Self | July | 1995 | p584 |
Double Mirrors Reflect Higher Speed | Bengt Olsson | July | 1995 | p571 |
| 20 Hz Sub-woofer | Jeff Macaulay | Aug | 1995 | p636 |
| Expert witness: bjts v mosfets | John Linsley-Hood | Aug | 1995 | p684 |
| Analogue Processing: Slew-Rate Limiting | Ian Hickman | Aug | 1995 | p684 |
| Few compliments for non-complements (2-stage power amps) | Douglas Self | Sep | 1995 | p763 |
| Square law rules in audio power | Ian Hegglun | Sep | 1995 | p751 |
| Ultra-fast Amplifier | Giovanni Stochino | Oct | 1995 | p835 | *
| Hot Audio Power- Valve/Semi Hybrid | Jeff Macaulay | Oct | 1995 | p856 | *
| Controlling Audio Dynamic Range | John Linsley-Hood | Nov | 1995 | p938 |
| Audio Preamp- Simple But Sound | Reg Williamson | Dec | 1995 | p1012 | *
| Classic Valve Power | Morgan Jones | Dec | 1995 | p1034
| 1996
| Fresh Look at Valve Power | Morgan Jones | Jan | 1996 | p24
| High Performance THD Meter | Ian Hickman | Jan | 1996 | p52
| Modelling Cable | Ben Duncan | Feb | 1996 | p119 |
| High Power Valve Amplifier | Morgan Jones | Feb | 1996 | p110
| Notes On Free Phasing | Ian Hickman | Feb | 1996 | p124
| Audio power with a new loop | Marcel van de Gevel | Feb | 1996 | p140 |
| Non-slewing Audio power. | Giovanni Stochino | Mar | 1996 | p256 |
Designing Valve RIAA Preamps: Part 1 | Morgan Jones | Mar | 1996 | p190
| Designing Valve RIAA Preamps: Part 2 | Morgan Jones | Apr | 1996 | p290
| Speaker Feedback | Ian Hegglun | May | 1996 | p378
| Thermal dynamics of power amps: Part1 | Douglas Self | May | 1996 | p410 |
High Performance Mic Preamp | Simon Bateson | May | 1996 | p420 | *
| Thermal dynamics of power amps: Part2 | Douglas Self | June | 1996 | p481 |
Precision Preamp '96: Part 1 | Douglas Self | Jul/Aug | 1996 | p540 |
New Relay for Power Audio | Barclay McKenna | Jul/Aug | 1996 | p562
| Speaker Cable Differences | Ben Duncan | Jul/Aug | 1996 | p570
| Class A power | John Linsley-Hood | Sep | 1996 | p681 |
| Precision Preamp '96: Part 2 | Douglas Self | Sep | 1996 | p708 |
Rationalised Phono Preamplifier | Simon Bateson | Oct | 1996 | p758 | *
| Thermal dynamics of power amps Part3 | Douglas Self | Oct | 1996 | p754 |
Filter Variations | Ian Hickman | Oct | 1996 | p769
| Night Thoughts on Crossover distortion | Douglas Self | Nov | 1996 | p858 |
Hybrid power amplifier | Wim de Jager | Nov | 1996 | p897 |
| Gain from Passives | Ian Hickman | Nov | 1996 | p842 |
| Measuring Speaker Cables: 1 | Cyril Bateman | Dec | 1996 | p925 |
| Speaker Cables Pulse Tested | Eric Foster | Dec | 1996 | p930 |
| 1997
| Load-invariant audio power | Douglas Self | Jan | 1997 | p16 |
| Measuring Speaker Cables: 2 | Cyril Bateman | Jan | 1997 | p52
| Overload Matters (RIAA overload) | Douglas Self | Feb | 1997 |
| Measuring Speaker Cables: 3 | Cyril Bateman | Feb | 1997 | p119
| Filters Using Negative Resistance | Ian Hickman | Mar | 1997 | p217
| Ultra fast Audio amplifier. #1 | Giovanni Stochino | Apr | 1997 | p278
| Balanced line inputs and outputs: Part 1 | Douglas Self | Apr | 1997 |
Balanced line inputs and outputs: Part 2 | Douglas Self | May | 1997 |
Error feedback in audio power | William de Bruyn | Jun | 1997 | p476 | *
| Measuring Speaker Cables | Ben Duncan | Jul | 1997 | p570
| Ironing out Distortion Part2 (Part 1 Jan 95) | Edward Cherry | Jul | 1997 | p577 |
| The Audio power interface: Part 1 | Douglas Self | Sep | 1997 | p717 |
| The Audio power interface: Part 2: cables | Douglas Self | Oct | 1997 |
The Audio power interface: Part 3: speakers | Douglas Self | Nov | 1997 |
1998
| Diagnosing Distortion (THD residuals) | Douglas Self | Jan | 1998 | p32 |
Loudspeaker undercurrents (Otala excess currents) | Douglas Self | Feb | 1998 | p98 |
THD analyser | John Linsley-Hood | Feb | 1998 | p104
| Stereo Audio Monitor | Robert Kesler | Mar | 1998 | p225 |
| Class B in a new class | Mike J Renardson | Apr | 1998 | p274 |
| Amplifier Instability | Erik Margan | Apr | 1998 | p311
| A Perfect Variable Oscillator? | Ian Hickman | June | 1998 | p485
| Gain-stage investigations | John Linsley-Hood | Jul | 1998 | p578 |
| Ultra fast Audio amplifier #2 | Giovanni Stochino | Aug | 1998 | p633 |
| 1999
| Class A to 300W | Colin Wonfor | Mar | 1999 | p188 | Comments
| Class distinction in Amplifiers | Douglas Self | Mar | 1999 | p190 |
| Zero Distortion? | Ian Hickman | Mar | 1999 | p224 |
Hotter SPICE- improved MOSFET models | Ian Hegglun | Mar | 1999 | p394
| Early Effect: Part 1 | Bryan Hart | June | 1999 | p474
| Relay muting | Douglas Self | Jul | 1999 | p544 |
| Early Effect: Part 2 | Bryan Hart | July | 1999 | p591
| Cool audio power: Part 1 (Power Partition Diagrams) | Douglas Self | Aug | 1999 | p657 |
| Precise Active Crossover | Bill Hardman | Aug | 1999 | p652
| Measure THD Below 0.001% | Ian Hickman | Aug | 1999 | p626
| Cool audio power: Part 2 (Power Partition Diagrams) | Douglas Self | Sept | 1999 | Fast audio power | Yuri Ezhkov | Sep | 1999 | p723 |
| Class A, 32W from a 12V rail | Richard Burfoot | Nov | 1999 | p934 |
| Audio power analysis | Douglas Self | Dec | 1999 | p1033 |
| A new Class AB design | Wim de Jager, | van Tuy & van der Ven Dec | 1999 | p982 |
| 2000
| Adaptable Active Speaker Design | Christof Heinzerling | Feb | 2000 | p105
| Notch Filters | Ian Hickman | Feb | 2000 | p120
| Hybrid audio power | Wim de Haan | Mar | 2000 | p198 |
| Class T is Hi-fi? | Ian Hickman | Apr | 2000 | p274
| JLH A Lifetime In Electronics | J L Hood | May | 2000 | p417
| JLH A Lifetime In Electronics | J L Hood | June | 2000 | p480
| 100W new topology Class B | Russel Breden | June | 2000 | p486 |
| Speakers Corner: crossover summation | John Watkinson | Sept | 2000 | p720
| Better Buffers: Part 1 | Dave Kimber | Sept | 2000 | p725
| Distortion... the facts | Ian Hickman | Oct | 2000 | p760
| Better Buffers: Part 2 | Dave Kimber | Oct | 2000 | p784
| Better Buffers: Part 3 | Dave Kimber | Nov | 2000 | p858
| 2001
| Phono Preamp For The CD Era: Part 1 | Norman Thagard | Apr | 2001 | p258
| Speaker's Corner: Voltage or Current Drive? | John Watkinson | May | 2001 | p354
| Phono Preamp For The CD Era: Part 2 | Norman Thagard | Apr | 2001 | p356
| MOSFET power | David White | Aug | 2001 | p578 |
| Speaker's Corner: Motional Feedback | John Watkinson | Sept | 2001 | p698
| Output Coil crosstalk | Douglas Self | Oct | 2001 | p749 |
| Class G: Part 1 | Douglas Self | Dec | 2001 | p900 |
| 2002
| At this point Electronics World, for reasons unknown, decided to abandon the practice of having page numbers accumulate through the year.
| Class G: Part 2 | Douglas Self | Jan | 2002 | p12 |
| Class G Indicator | Douglas Self | Feb | 2002 | p59 |
| Two Channels- One Gain Pot | Brian Gough | Feb | 2002 | p61
| Capacitor Distortion: Part 1 | Cyril Bateman | July | 2002 | p12
| Capacitor Distortion: Part 2 | Cyril Bateman | Sept | 2002 | p16
| Tying the Knot- MFB Loudspeaker: Part 1 | Jeff Macaulay | Sept | 2002 | p26
| Transparent VI Protection in Amplifiers: Part 1 | Michael Kiwanuka | Sept | 2002 | p46
| Capacitor Distortion: Part 3 | Cyril Bateman | Oct | 2002 | p12
| Tying the Knot- MFB Loudspeaker: Part 2 | Jeff Macaulay | Oct | 2002 | p46
| Transparent VI Protection in Amplifiers: Part 2 | Michael Kiwanuka | Oct | 2002 | p50
| Capacitor Distortion: Part 4 | Cyril Bateman | Nov | 2002 | p40
| Capacitor Distortion: Part 5 | Cyril Bateman | Dec | 2002 | p44
| 2003
| Capacitor Distortion: Part 6 | Cyril Bateman | Jan | 2003 | p44
| Hybrid power amplifier Improved | Wim de Jager | Feb | 2003 | p46 |
| Audio Power Amplifier Compensation | John Ellis | Mar | 2003 | p10
| Class AB Balanced Audio Line Driver | Wim de Jager | May | 2003 | p49
| Amplifier Input Currents | Douglas Self | May | 2003 |
| Capacitor Sounds II: Part 1 Real-Time Hardware | Cyril Bateman | July | 2003 | p36
| Capacitor Sounds II: Part 2 Distortion v Time v Bias | Cyril Bateman | Aug | 2003 | p46
| The Cathode | Patrick Mitchell | Sept | 2003 | p12
| Capacitor Sounds II: Part 3 Distortion Meter | Cyril Bateman | Sept | 2003 | p46
| Noise & Moving-Magnet Cartridges | Marcel van de Gevel | Oct | 2003 | p38
| Flat Wideband Buffers | de Lange | Oct | 2003 | p19
| Capacitor and Amplifier Distortions | Cyril Bateman | Nov | 2003 | p44
| 2004
| Analogue Switching: Part 1 | Douglas Self | Jan | 2004 |
| Analogue Switching: Part 2 | Douglas Self | Feb | 2004 |
| Hybrid Audio Amplifier | Jeff Macaulay | Mar | 2004 | p48
| In Memoriam: John Linsley Hood MIEE | Ian Hickman | May | 2004 | p17
| Precision Rectifier Circuits | Alan Bate | May | 2004 | p26
| Class-A Imagineering: Part 1 | Graham Maynard | Jun | 2004 | p22 | Comments
| A Simple Class A Amplifier (Reprint from 1969) | J Linsley Hood | Jun | 2004 | p44
| John Linsley Hood Obituaries | Jun | 2004 | p52
| Class-A Imagineering: Part 2 | Graham Maynard | July | 2004 | p16 | Comments
| Class-A Imagineering: Part 4 | Graham Maynard | Sept | 2004 | p10 | Comments
| Class-A Imagineering: Part 5 | Graham Maynard | Oct | 2004 | p10 | Comments
| Simulating Power MOSFETs: Part1 | Cyril Bateman | Oct | 2004 | p22
| Class-A Imagineering: Part 6 | Graham Maynard | Nov | 2004 | p10 | Comments
| Simulating Power MOSFETs: Part2 | Cyril Bateman | Nov | 2004 | p26
| Simulating Power MOSFETs: Part 3 | Cyril Bateman | Dec | 2004 | p10
| The December 2004 issue was the last with Phil Reed as editor.
| 2005
| The Jan 2005 issue was the first with Svetlana Josifovska as editor.
| Simulating Power MOSFETs: Part 4 | Cyril Bateman | Jan | 2005 | p34
| Adventure: Noise. (RIAA noise) | Burkhard Vogel | May | 2005 | p28
| Switch-Mode Amplifier Performance Measurements | Bruce Hofer | Sept | 2005 | p30
| 2006
| The Sound of Silence (MC preamps) | Burkhard Vogel | Oct | 2006 |
| Class XD: a New Power Amplifier | Douglas Self | Nov | 2006 | p20 |
| 2007
| Hot Audio Power Revisited | Jeff Macaulay | Jan | 2007 | p48
| 2008
| 2009
| The Hum Figure | Burkhard Vogel | Mar | 2009 | p20 |
Reduce Ear Fatigue In Power Amps | Wangeri Kaguongo | Mar | 2009 | p24 | Comments
| |
An incomplete guide to power amplifier designs in the European magazine "Elektor".
| 200W Raw Power | anon | Jan 1981 |
| AXL amplifier | anon | Mar 1985 |
| High-Power AF Amplifier | anon | Jun 1986 |
| LFA-150: A Fast Power Amplifier. Pt 1 | A Schmeets | Nov 1988 |
| Medium-Power AF Amplifier | T Giffard | Oct 1990 |
| 100W High-End AF Power Amplifier | T Giesberts | Mar 1994 |
| HexFET Amplifier Upgrade | T Giesberts | Sep 1995 |
| 300W Power Amplifier | A Riedle | Nov 1995 |
| Compact AF Power Amplifier | T Giesberts | May 1997 |
| . | ||
| Pax Error-Correcting Power Amplifier: Part1 | J Didden | Apr 2008 |
| Pax Error-Correcting Power Amplifier: Part2 | J Didden | May 2008 |
|