| Equa Power Amplifier FIRST ENGLISH ISSUE | anon | Jan 1974 | p16 | S
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| Electronic Loudspeakers | anon | Jan 1974 | p50 | S
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| Disc Preamp | anon | Apr 1975 | p444
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| Edwin Power Amplifier | anon | Sept 1975 | p910 | S
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| Quadi-Complementary (Current Dumping) | anon | Dec 1975 | p1220
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| PRECO Preamplifier: Part 1 | T Meyrick | Apr 1976 | p417 | S
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| Equin Power Amplifier: Part 1 | anon | Apr 1976 | p448 | S
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| PRECO Preamplifier: Part 2 | T Meyrick | May 1976 | p516 | S
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| Equin Power Amplifier: Part 2 | anon | May 1976 | p525 | S
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| Class-A Sliding-Bias (Mullard) | anon | July/Aug 1976 | p739 | S
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| Stereo Audio Mixer | anon | Jan 1977 | p1-14 | S
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| Quadi-complementary complemented | anon | Jan 1977 | p1-39 | S
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| Negative Feedback & Error-Correction | anon | Mar 1977 | p3-38 |
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| Formant Synthesiser: Part 1 | C Chapman | May 1977 | p5-14 |
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| Music Cleaner filter | anon | May 1977 | p5-46 |
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| Active Loudspeaker: Crossover filters | anon | May 1977 | p5-46 |
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| Formant Synthesiser: Part 2 | C Chapman | June 1977 | p6-14 |
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| Active Loudspeaker: Crossover filters 2 | anon | June 1977 | p6-37 |
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| Formant Synthesiser: Part 3 | C Chapman | Sept 1977 | p9-42 |
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| Formant Synthesiser: Part 4 | C Chapman | Oct 1977 | p10-40 |
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| Equaliser | Anon | Jan 1978 | p1-08 |
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| Formant Synthesiser: Part 7 | C Chapman | Jan 1978 | p1-34 |
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| Moving Coil Preamp | Anon | Apr 1978 | p4-02 | S
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| Elektornado Amplifier | Anon | Apr 1978 | p4-07 |
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| Formant Synthesiser: Part 10 | C Chapman | Apr 1978 | p4-33 |
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| Digital Reverberation Unit | Anon | May 1978 | p5-08 |
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| Vocoder: Part 2 | C Chapman | May 1978 | p5-21 |
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| Stereo Width Control | Anon | July/Aug 1978 | p7-22 | S
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| Preconsonant RIAA Preamp | Anon | July/Aug 1978 | p7-34 | S
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| Consonant Preamp | Anon | July/Aug 1978 | p7-38 | S
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| 24dB/oct VCF for Formant | C Chapman | Sept 1978 | p9-34 |
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| PWM Audio Amplifiers (Class-D) | Anon | Dec 1978 | p12-04 |
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| Measuring by the book: IHF-standards | Anon | Jan 1979 | p1-02 | S
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| Class Tells (Technics Class-A) | Anon | Jan 1979 | p1-22 | S
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| Crosstalk Canceller (Denon) | Anon | Mar 1979 | p3-04 | S
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| Stentor Amplifier (+12V) | Anon | Apr 1979 | p4-14 | S
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| Using an Equaliser | Anon | Sept 1979 | p9-04 |
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| Parametric Equaliser | Anon | Sept 1979 | p9-26 |
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| Audio Analyser | Anon | Sept 1979 | p9-38 |
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| Top Preamp | Anon | Dec 1979 | p12-13 |
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| Ring Modulator | Anon | Dec 1979 | p12-27 |
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| Tailoring Potentiometers (with loading resistors) | Anon | Dec 1979 | p12-36 |
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1980-89
| Vocoder: Part 1 | Anon | Jan 1980 | p1-24 |
| | Vocoder: Part 2 | Anon | Feb 1980 | p2-14 |
| | FET Opamps for Formant | Anon | Feb 1980 | p2-09 |
| | Chorosynth | J D Mitchell | Mar 1980 | p3-17 |
| | PWM amplifier 3W/4R | E Postma | Mar 1980 | p5-22 |
| | 200W Raw Power | anon | Jan 1981
| | Noise Reduction (High-Com) | anon | Feb 1981 | p2-04 |
| | Voiced/Unvoiced Detector (for Vocoder) | F Visser | Feb 1981 | p2-17 |
| | Music Synthesiser ICs | H P Baumann | Oct 1981 | p10-18 |
| | New Elektor Synthesiser: Part 2 | anon | Nov 1981 | p11-14 |
| | New Elektor Synthesiser: Part 3 VCO | anon | Dec 1981 | p12-39 |
| | New Elektor Synthesiser: Part 4 VCF/VCA | anon | Jan 1982 | p1-22 |
| | Guitar Amplifier Philosophy | anon | Jan 1982 | p1-42 | S
| | New Elektor Synthesiser: Part 5 ADSR & LFO | anon | Feb 1982 | p2-24 |
| | CX and DNR Noise Reduction | anon | Feb 1982 | p2-41 | S
| | New Elektor Synthesiser: Part 6 COM | anon | Mar 1982 | p3-18 |
| | Polyphonic Synthesiser | anon | Mar 1982 | p3-51 |
| | Wind Noise Generator | H Pietzko | Mar 1982 | p3-16 | S
| | DNR Noise Reduction | Anon | Mar 1982 | p3-29 | S
| | 100W Power Amplifier | Anon | Apr 1982 | p4-19 | S
| | Class A+B Power Amplifier | Anon | July/Aug 1982 | p7-51 | S
| | Super Low-noise Preamp | Anon | July/Aug 1982 | p7-72 |
| | Stereo Power Amplifier (LM2896) | Anon | July/Aug 1982 | p7-82 |
| | AXL amplifier | anon | Mar 1985
| | Car Radio amplifier | anon | Nov 1985 | p46
| |
| | Loudspeaker Impedance Correction | anon | May 1986 | p30 | S
| | Portable Mixer: Part 2 | anon | May 1986 | p33 | S
| | High-Power AF Amplifier: Part 1 | anon | May 1986 | p60 | S
| | High-Power AF Amplifier: Part 2 | anon | June 1986 | p26 | S
| | Portable Mixer: Part 3 | anon | June 1986 | p62 | S
| | Equaliser for Guitars | W Teder | Oct 1986 | p24 | S
| | Top of the Range Preamplifier: Part 2 | anon | Dec 1986 | p54 | S
| |
| | Biphaser | W Teder | Mar 1987 | p46 | S
| | Valve Preamplifier: part 1 | anon | Mar 1987 | p50 | S
| | Active Phase-Linear Crossover Network | | Sept 1987 | p61 | S
| |
| | Fuzz Unit for Guitars | anon | Apr 1988 | p33 |
| | LFA-150: A Fast Power Amplifier: Part-1 | A Schmeets | Nov 1988 | p20 | S
| | Harmonic Enhancer | W Teder | Nov 1988 | p41 |
| | LFA-150: A Fast Power Amplifier: Part-2 | A Schmeets | Dec 1988 | p42 | S
| | Pitch Control for CD Players | A Schmeets | Dec 1988 | p21 |
| |
| | MOSFET Hifi Power Amplifier | anon | Feb 1989 | p14 | S
| | Tweeter Protector | K Baumotte | Feb 1989 | p69 | S
| | Class-D Power Amplifier | J Bareford | Apr 1989 | p19 |
| | Upgrading the Vox AC-30 | F P Zantis | Apr 1989 | p26 | S
| | Guitar Amplifier | T Giffard | June 1989 | p14 |
| |
| 1990-99
| Medium-Power AF Amplifier (4-stage) | T Giffard | Oct 1990 | p54 | S
| | Dubbing Mixer EV7000: Part-1 | anon | Oct 1990 | p58 |
| | Medium-Power AF Amplifier (4-stage) Part-2 | T Giffard | Nov 1990 | p44 | S
| | Active Mini Sub-woofer | T Giffard | Nov 1990 | p48 |
| |
| | The Complete Preamplifier: Part-1 | T Giffard | Jan 1991 | p44 | S
| | Preamplifier for Moving-Coil Pickup | T Giffard | Apr 1991 | p18 | S
| | Surf generator | W Cazemier | Apr 1991 | p51 | S
| | Preamplifier for Moving-Magnet Pickup | T Giffard | May 1991 | p54 | S
| | Class-A Power Amplifier (really AB) | T Giffard | Nov 1991 | p37 | S
| |
| | Active 3-way Loudspeaker | Ton Giesberts & H Baggen | July/Aug 1993 | p8 | S
| | Class-A Preamplifier | Ton Giesberts | July/Aug 1993 | p61 | S
| | Medium Power HexFET Amplifier | Ton Giesberts | Dec 1993 | p8 | S
| |
| | 100W High-End AF Power Amplifier | Ton Giesberts | Mar 1994 | p
| |
| | HexFET Amplifier Upgrade | Ton Giesberts | Sep 1995 | p |
| | 300W Power Amplifier | A Riedle | Nov 1995 | p
| | Compact AF Power Amplifier | Ton Giesberts | May 1997 | p
| |
| 2000-2009
| 1.5V Power Amp | S Weber | Dec 2000 | p | P
| | Crescendo Amplifier Millennium Edition | Ton Giesberts | Apr 2001 | p | P
| | Tunable Active Notch Filters | H Kuhne | Mar 2002 | p | P
| | Active Loudspeaker System: Part-1 | Ton Giesberts | Jan 2003 | p | P
| | Active Loudspeaker System: Part-2 | Ton Giesberts | Feb 2003 | p | P
| | FET Amp with Valve Sound | B Kainka | Nov 2003 | p | P
| |
| | High-End Preamp: Part 1 | Benjamin Hinrichs | Apr 2004 | p | P
| | High-End Preamp: Part 2 | Benjamin Hinrichs | May 2004 | p | P
| | Clarity Class-T power amp: Part 1 | Ton Giesberts | June 2004 | p | P
| | Clarity Class-T power amp: Part 2 | Ton Giesberts | Sept 2004 | p | P
| | Clarity Class-T power amp: Part 3 | Ton Giesberts | Oct 2004 | p | P
| | Class-D output filters | Ton Giesberts | Nov 2004 | p | P
| |
| | High-End Power Amp | Ton Giesberts | Mar 2005 | p | P
| | RIAA preamp | C Tavernier | July/Aug 2006 | p | P
| | Paraphase Tone Control | Ton Giesberts | July/Aug 2006 | p | P
| | Hybrid Headphone Amp | Jeff Macaulay | July/Aug 2006 | p | P
| |
| | Class-A Triode Amp | Wim de Jager | June 2007 | p | P
| | Headphone Amp with 3D Sound | R Champlin | Nov 2007 | p | P
| |
| | Pax Error-Correcting Power Amplifier: Part1 | J Didden | Apr 2008 | p24 | S
| | Pax Error-Correcting Power Amplifier: Part2 | J Didden | May 2008 | p44 | S
| | Motorised Volume Control | Frank Link | Nov 2008 | p38 | S
| |
| | New Developments in Class-D | Thijs Beckers | Nov 2009 | p36 | S
| |
| 2010-onward
| Switch-mode PSUs for Hifi | Ton Giesberts et al | June 2010 | p | P
| | The 5532 OpAmplifier: Part 1 | Douglas Self | Oct 2010 | p14
| | Electrolytic Capacitors in Audio Circuits | Ton Giesberts | Oct 2010 | p44 | S
| | The 5532 OpAmplifier: Part 2 | Douglas Self | Nov 2010 | p24
| | Sixties-style 40 W Audio Amplifier | J Kreutz | July/Aug 2011 | p | P
| | Consonant Control Preamplifier | Jan Buiting | Feb 2012 | p | P
| | Preamplifier 2012: Part 1 | Douglas Self | Apr 2012 | p16
| | Preamplifier 2012: Part 2 | Douglas Self | May 2012 | p28
| | Preamplifier 2012: Part 3 | Douglas Self | June 2012 | p20
| | Q-Watt Audio Power Amplifier | Ton Giesberts | Sept 2013 | p | P
| | | | |
