- 03/2009 - Phiaton Moderna MS 400 Headphones SoundStage!
- 08/2009 - Denon AH-D1001 Headphones SoundStage!
- 07/2008 - HeadRoom Portable Micro Headphone Amplifier with DAC SoundStage!
- 06/2008 - HeadRoom Ultra Micro Headphone Amplifier SoundStage!
- 04/2008 - Audio-Technica ATH-AD700 Headphones SoundStage!
- 11/2007 - Citypulse Audio EF3.01 Headphone Amplifier SoundStage!
- 09/2007 - Blue Circle Audio SBH Headphone Amplifier SoundStage!
- 02/2007 - Shure E500 Headphones SoundStage!
- 11/2006 - Beyerdynamic DT 880 Headphones SoundStage!
- 10/2006 - HeadRoom Total BitHead Headphone Amplifier SoundStage!
- 09/2006 - HeadRoom "Pimped-Out" Desktop Headphone Amplifier SoundStage!
- 08/2006 - HeadRoom Desktop Millet Hybrid Headphone Amplifier SoundStage!
- 07/2006 - AKG K701 Headphones SoundStage!
- 07/2006 - NoiseBuster NB-FX Noise-Canceling Headphones GoodSound!
- 06/2006 - Stello HP100 Headphone Amplifier SoundStage!
- 05/2006 - Original Electronics Master Headphone Amplifier SoundStage!
- 04/2006 - HeadRoom Micro Amp and Micro DAC GoodSound!
- 09/2005 - RudiStore RP5.1 Headphone Amplifier SoundStage!
- 07/2005 - Sennheiser HD 650 Headphones SoundStage!
- 06/2005 - Sound Quest SQ-84 Integrated/Headphone Amplifier SoundStage!
- 02/2005 - Sensaphonics Hearing Conservation ProPhonic Soft 2X Headphones SoundStage!
- 02/2005 - Lehmann Audio Black Cube Linear Headphone Amplifier SoundStage!
- 12/2004 - Stefan AudioArt Equinox HD 650/600/580 Replacement Headphone Cable SoundStage!
- 10/2004 - SinglePower Audio PPX3-6SN7 Headphone Amplifier SoundStage!
- 10/2004 - SinglePower Audio Supra Headphone Amplifier SoundStage!
- 08/2004 - HeadRoom Total BitHead Headphone Amplifier SoundStage!
- 08/2004 - HeadRoom Total BitHead Headphone Amplifier GoodSound!
- 06/2004 - Ray Samuels Audio Emmeline II The Stealth Preamp/Headphone Amp SoundStage!
- 04/2004 - Sennheiser HD 650 Headphones onhifi.com
- 03/2004 - Musical Fidelity X-Can V3 Headphone Amplifier onhifi.com
- 02/2004 - Etymotic Research ER-4P Headphones onhifi.com
- 11/2003 - Stefan AudioArt Equinox HD 600/580 Headphone Replacement Cable onhifi.com
- 10/2003 - HeadRoom Maxed Out Home Headphone Amplifier/Preamplifier GoodSound!
- 09/2003 - Applie iPod GoodSound!
- 09/2003 - Sugden Bijou HeadMaster Headphone Preamplifier/Amplifier onhifi.com
- 02/2003 - Etymotic Research ER-6 Isolator Earphones onhifi.com
- 01/2003 - Sennheiser HD 600 Headphones SoundStage!
- 01/2003 - Beyerdynamic DT 231, Sennheiser HD 497, and Grado SR60 Headphones GoodSound!
- 09/2002 - Koss KSC-50, Sennheiser MX 400, and Koss PortaPro Headphones GoodSound!
- 08/2002 - HeadRoom BlockHead Headphone Amplifier onhifi.com
- 07/2002 - Clou Cable 212 Red Jaspis Headphone Replacement Cable onhifi.com
- 06/2002 - HeadRoom Maxed Out Home Headphone Amplifier SoundStage!
- 10/2001 - Sennheiser HD 600 Headphones onhifi.com
- 07/2001 - Stax SRS-4040 System II onhifi.com
- 12/2000 - AKG K- 501 Stereo Headphones onhifi.com
- 07/1999 - HeadRoom AirHead SoundStage!
- 02/1998 - Sony Fontopid Twin Turbo MDR-E505; Sennheiser MX3; Beyerdynamic DT-250; Etymotic Research ER-4S Headphones SoundStage!
- Little Headroom and the Grado SR-60 and SR-80 Headphones SoundStage!
- 11/1996 - Maxxed Out Home Headroom SoundStage!
- 08/1996 - Seven Darn Fine Reasons for a Headphone System Too! SoundStage!
- Audio Alchemy HPAv1.0 Headphone Amp SoundStage!