Some of the revisions of the new Taboo MK III that can be applied to existing
white Taboo's are:
New Input Stage to increase the amplifiers gain to be closer to other Decware amplifiers eliminating the need for a preamp.
Mod - $100
Changed the input tube from a 12AU7 to a 6922
Mod - $50
Employed a voltage divider in series with the headphone output to increase the usable range of the volume control and further reduce noise.
Mod - $70
Added a second lucid mode circuit (and switch) designed for Planar Headphones that can be used with or without existing lucid mode.
Mod - $150
Modified the power supply and eliminated the choke for a more relaxed sound and more graceful clipping.
Mod - $150
Installed Cryo Treated Beeswax coupling capacitors in place of standard poly film caps for increased resolution, (even higher than VCAPs) and a more organic sound.
Mod - $150
And that's about it.
Mods that will also be found on the new amp that
can not be applied are as follows:
Thicker Steel Top Plate for lower vibration / micro phonics making use of NOS tubes a more enjoyable experience on headphones.
Black 1930's typewriter finish.
Bias meters for each output tube so that you can see the condition of the tubes, how well they match, and when the amp clips.
Fully Balanced XLR outputs for headphones in addition to the dual 1/4 headphone jacks, one on each side for convenience.
Dual inputs for two sources - switch located in the front for ease access.
Stepped Attenuator standard for perfect channel to channel tracking at low volumes on headphones
Input level controls for each RCA input jack. That means a total of 4 controls for the 2 sources. This was done to improve the internal layout, and make it possible to balance the channels independently for each source. Example, I have a great sounding tuner but it's a touch weak on the right channel. I make the correction on the back of the new Taboo and never touch it again. My other source, a DAC, remains unaffected.
BTW - the amplifier will also drive loudspeakers just as it always has, just sound better doing it.
I'll post a picture of the prototype in this thread when I get me camera working next week.
Steve