Note:  Optional premium teflon gold plated jacks $11 per jack, gold plated jacks $6 ea.  Updates are available for most of our products--premium connectors, balanced inputs/outputs etc.
Inquire for details.

Selected Updates
--DB-1 & DB-2 to DB-1A/2A  Improved RIAA (.04 dB) and complete retest.  Includes gold plated phono jacks (2) and diamond cut solid aluminum knobs. $98
--DB-1A to DB-1B Includes new lower noise high level stage, Alps 80 dB tracking volume control, 6 dB better channel separation, all gold plated jacks, solid oak cabinet with new front panel and warranty extension to three years.  (Also available with old panel and new solid walnut cabinet for reduced cost). $450
--Install gold plated jacks on DB-1A $108
--Install Teflon gold jacks on DB-1A $198
--Install Alps volume control $98
--DB-4 to DB-4B Gain increased by 5 dB, noise reduced by 4 dB + gold plated jacks 70
--DB-4A to 4B 3 dB more gain, 2 dB less noise 37
--DB-2 to 2A Lower output impedance, 12 dB less ripple and soft turn-on circuit 220
--DB-6 to 6A Improvement triples power supply capacitance to 42,000 uF for cleaner clipping.  Gold plated binding posts and jacks and warranty extension to two years, stereo 255, mono 235
--DB-6A to 6A+ Increases power supply capacitance to 126,000 uF 253
--Improved turn-on/off-transient suppression for older DB-6 power amplifiers 80
--Amplifier Conversion: -40 W stereo to 140 W mono amplifier 39
                                   -Mono to Stereo 55
--Amplifier Gold jacks:  Mono 20, Stereo 40