I have been mulling over an A2P for a long time. Like the tube sound of the TUR-06, but hate the form factor. What does the TUR-07 sound like? Analog? Tube-like? Or just like other solid state amps?
Analog Squared Paper Discussion Thread. - Page 239
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Once I get the 07 I'll report back but the 07 uses Sit which is essentially a single chip which preforms like hybrid amp but lacks the need of tube. They are old and no longer made but those who can get ahold they swear by it.
More info on SIT
One used TEN 3S4 available in this set:
@nevin - slowly - really occupied by my job, but after having finished the general design of all components for my "highend" tu-05 mod some months ago i have started designing portable amps to learn more about amp and tube amp design and compact implementation.
by the way i had the idea or maybe just wanted to build the (hopefully) worlds smallest tube amp , so here is my (really good sounding) candidate:
the size of the housing is 6 x 4 x 2 cm, it contains the amp shown above including 2 li-ion batteries, balancer-board, two submini tubes, two Double-Opamps, one on-off and two impedance switches, potentiometer, Input, Output and charger Input jack.
above the amp you can see the charger implemented as USB-Stick adjustable for 4.2 , 8,4 or 16.8 Volt 80 mA.
here is a better picture:
one tube per channel, the tubes are subminiature JAN 6418 tubes. the amp uses an dc/dc step down converter for the filament voltage with additional CRC filters per channel, the runtime is about 10 hours even with this very small 230mA li-ion batteries. to get a compact battery pack including the balancer /protection board i used two component epoxy resin to make one battery block. under the tubes are the opamp amplifier / buffer stages.
Edited by GermanGuy - 4/14/15 at 4:02am
That look very awesome! What would be the output power? I'm signing up to buy one if you're going to produce it. :-D