| Pass Labs XA-160.8 Amplifier pic|
Sony Modded SCD-1 pic
SCD-1 Modded Chassis pic
Twisted Pear/Sony SCD-1 32bit ESS Sabre ES9018 DAC Upgrade pic
Merlin VSM-MX speaker with Modded BBAM pic
Merlin VSM Crossover Mod Claritycap MR Tweak pic
Merlin VSM Crossover Mod: Duelund Resistors with 2.0 V2 Wire pic
Merlin VSM-MX RC & Jumpers Tweak Tweak pic
Merlin VSM Tweeter Diffuser Tweak pic
Tannoy ST-100 Supertweeter Speaker pic
Kenwood L-07D Direct Drive Turntable pic
VPI Modded TNT with thread drive pic
VPI Modded TNT DIY bearing, clamp & platform pic
Trans-fi Modded Terminator Pro Linear Air Bearing Tonearm pic
Trans-Fi Custom Arm Wand for Universal Headshells Tonearm pic
Trans-Fi Reso-Mat Turntable Mat Tweak pic
Trans-Fi Terminator Pro Tomahawk flat wand Tonearm pic
Trans-Fi Terminator Balanced 4N Silver Wire harness pic
Trans-fi Terminator Air Flow Controller Tweak pic
VPI Modded TNT Custom Platter Bearing pic
VPI Modded TNT footer DIY Ceramic Ball points Tweak pic
DIY Turntable Hardwood Sandbox with Segmented Top Plate pic
Mark Kelly AC-1 Turntable Drive Controller pic
Audio Research Modded PH-2 Phono Stage pic
Modded PH-2 Continuously Variable Loading Mod pic
Modded PH-2 Expansion PCB Bottom View pic
Various MC & MM/MI Cartridges
Soundsmith Grace F9 Ruby OCL Stylus Cartridge pic
Atma-Sphere Modded MP-1 Mark II.2 pic
Atma-Sphere Modded MP-1 Power Supply Chassis pic
Balanced Audio Modded VK-75SE pic
BAT VK75SE mod Cardas No-Stress binding posts Tweak pic
Velodyne Modded DD-15 pic
Optima Yellow Top & Odyssey PC2150 Battery Supplies pic
Sennheiser HE60 Electrostatic Headphones Speaker
DIY Roller Ball Footers Black Pearls Tweak pic
Balanced Power DIY Power Conditioner/Distributor Tweak pic
Pass, Atma, BAT, Merlin, SCD-1 Workshop
After too much audiophile nervosa, I'm at the point where modifying high-quality components has mostly eliminated equipment churn. The effect of modifying even quite expensive components can be surprising, leading me to the conclusion that as generally applied, the term "house sound" is a euphemism for compromised resolution & transparency.
Batteries are excellent power sources for low-current front-end components. The modded SCD-1 and the Merlin BBAM "bass equalizer" have been converted to run on large deep-cycle SLA batteries. Odyssey & Optima batteries were selected for their high amp-hour reserve & low internal impedance, which is critical to maximizing transient response even for milliamp loads.
SCD-1 mods include conversion of internal DAC section to dual-mono ESS 32-bit Sabre DACs, passive analog stage of Audio Consulting New Silver Rock transformers, Audiocom Superclock 4 & PPR2 discrete voltage regulators, V-Cap, REL, Blackgate, Rubycon, Hovland, Caddock & Vishay upgrades, and Audio Consulting silver wire in natural cotton sleeves.
Op amps in the Merlin BBAM benefit as much as Sony DSPs from large batteries and the addition of custom discrete DC regulators.
The BAT VK75SE is a nice piece, further improved with V-Caps, Schottky rectifiers, silver wire, and TX2575 resistors.
The Velodyne DD-15 has improved control & impact after light modifications to AC/DC rectification & internal wiring.
The Atma-Sphere MP-1 MKII is a terrific preamp that has been improved after conversion of phono section to hybrid SS/tube, stroking power supply with Cree Schottky diodes, and adding various V-Cap, ClarityCap MR, & Texas Components/Vishay pieces.
The modded VPI TNT is more focused and lively after conversion from rubber belts to more speed-stable thread drive (with custom pulley drivetrain), and replacement of stock sprung suspension with an unsprung, mass-loaded plinth on top of a hybrid coupling/decoupling platform of sandbox, springs, and maple butcher block. Mark Kelly's AC-1 drive controller improves the speed stability of the turntable, while powering the VPI 300 RPM AC motor with a large 12V battery.
More recent steps up include Pass Labs XA-160.8 monoblocks, Pass XP-25 phono stage, Kenwood L07D turntable, DIY Parts Connexion/DH Labs BL-Ag ICs, and a roundelay of Stillpoints and Star Sound platforms.