Products

The 21st Century Maida Regulator Rev. 3.0 is a fully assembled module intended for B+ regulation in a vacuum tube amplifier. Since its release in 2...

The Differential Volume Control PCB is intended for use with a 4-gang ALPS RK271-series, "Blue Velvet" volume pot to form a fully differential (bal...

5-way binding post featuring: Gold plated. Accepts bare wire up to AWG 8 (8 mm2). Compatible with 4 mm banana plugs and spade terminals. Rotating ...

The Guardian-86 is a high-end protection circuit designed to protect speakers against two common ways that power amplifiers can misbehave: Sharp v...

The Neurochrome HP-LOAD is a stereo (2-channel) dummy load intended for use in the testing of headphone amplifiers.  The HP-LOAD features: Caddock...

Build a high-performance headphone amplifier for less than $500, including a nice professional chassis! The HP-2 is an all-DIY, low-distortion head...

Build a high-performance headphone amplifier for less than $100! The HP-22 is an all-DIY, low-distortion headphone amplifier. It provides 200 mW in...

The Input Selector is a relay-based input selector which supports the selection of one of six stereo inputs. It can be used as a passive preamp by ...

The ISS is designed as a companion board to the Power-686 and Power-86 power supply boards. It is equally well suited for use with other power supp...

Keratherm Red (86/82) is a thermal interface material with an extremely low thermal resistance. Thus, it is ideal for thermal pads in high-power ap...

The PCB layout is a large part of the circuit - some say the layout is the circuit. This is certainly true for high-end audio design and also for h...

Chassis for Modulus-86 Rev. 3.0, Modulus-186, and Modulus-286. All mounting hardware needed to assemble the chassis and attach the circuit boards w...

The Modulus-286 is the middle child of the Modulus family of amplifiers. It is perfect for those who want a high-performance amplifier that deliver...

The Modulus-686 is the most powerful member of the Modulus family of amplifiers. Thanks to the Neurochrome Modulus error correction circuit topolog...

Fully assembled and ready to rock Modulus-686 featuring: 125 W (8 Ω); 200 W (4 Ω) at vanishingly low distortion. Balanced (XLR) inputs Neutri...

Wiring harness for the Modulus-686 power amplifier. This harness includes: Input connector (Amphenol TJ0331530000G) Power supply connector (JST VL...

The Modulus-86 Rev. 3.0 is a 65 W composite amplifier which uses error correction to provide world class performance. It requires no adjustments an...

Forget the supply chain issues! This kit contains the circuit boards and all the parts needed to build two Modulus-86 amplifier modules. For the fu...

Output inductor for use with: Modulus-86 Rev. 2.3 and above (requires one inductor) LM3886 Done Right (requires one inductor) Specifications Pi...

The Power-686 is a power supply intended for use with the Modulus-686 power amplifier and similar high-power amplifiers. This power supply provides...

The Power-86 Power Supply Board is a companion board for the state of the art Neurochrome composite amplifiers. The intended use is for one Power-8...

The Preamp Power Supply provides a ±12 V output and can source up to 650 mA. This Power Supply features ultra-low output noise which makes it an id...

This input buffer is intended for use with the Purifi 1ET400A and Hypex NC500 Class D amplifier modules. Unlike other buffers, including the Purifi...

Chassis for a stereo Purifi 1ET400A or Hypex NC500 Class D power amp powered by a Hypex SMPS1200A400 power supply. The chassis further supports the...