Modifications for your audio components that challenge the best new products!

New audio components - superbly natural sound quality, unparalleled value!

Musical Concepts / Musical Design MUSICAL DESIGN Musical Concepts

PasPro 1 kit for Hafler DH-101 ships…………….…superb tube sound in a Hafler chassis! See PDF manual, more HERE!

Come and Visit Us at RMAF……………….OCT 10-12 in Denver, RM 431, RMAF link

New LX MKII mods for Hafler preamps available, update yours now…………….... see new information HERE.

PA-4 Elite Ultra amplifier modification.….…………....information/illustrations are new. See it here.

Re-stocked LC-500 caps for DH-500...............for the simplest power supply installation. See details here!

See the PDF instructions for PS-200 power supply................see it here above price list.

See new pricing, model features for our Hybrid amps........... Musical Design T-75 and T-100

NEW! Check out the DEMO/USED page..............for some new, hot, one of a kind items. See even more here!

SP-1/SP-2/2B Upgrade time is here. Two levels...…….. of outstanding improvement are available. Details!

DAC-1A Upgrade is ....…….. incredibly 3D with finely sculpted imaging. It’s musical reality! Details!

PIT STOP FOR A HAFLER DH-101……...... on the What’s New page.


Check out our Hybrid Amps!……………… Sweet, clean, immensely natural dynamics and definition!

SP-2/2B Upgrade time is here. Two levels……...…….. of outstanding improvement are available.

DAC-1A Upgrade is .………….… incredibly 3D with finely sculpted imaging. It’s musical reality! Details!

SEE new power amp lineup……………… with four new amps! See our T-100, 100W/CH Hybrid Amp!

NEW Ultra Natural sounding…………………. Elite and Elite Ultra option on many models!

NEW Phono add-on board ………………..for Chameleon and legacy SP-2B models!