*UPDATE* two units currently available 07/22
Possibly the best sounding fuzz-less “Acoustic 360” replica available anywhere!
thanks to the availability and choice of top quality components, my very own “minor fixes” to the original ’68 class-A circuitry, careful hand assembly and testing, and in addition a twelve-position VARIAMP frequency extension to the original five (50hz, 100hz, 200hz, 400hz, 800hz) positions, and a revised latching style opto-MUTE add-on – used for switching instruments in a live setting without having to turn down the volume … I can say this is my very best and final basic (fuzz-less) rendition of the Acoustic 360 preamp circuit …
It’s all there, … the vintage class-A feel augmented with a few modernities: excellent PSU filtering, low-noise/low-distortion OPA2134 based output line driver, custom wound CINEMAG-USA pro audio grade filter inductor, mix of Panasonic ECQ and Nichicon MUSE signal capacitors, low-noise transistors, Switchcraft jacks, Lorlin and C&K switches …
you name it, there is NO skimping here
it’s been 22 years since I cobbled the first 360+ unit together and since then have grown to appreciate the sound this circuit can produce – which is why I carry one with me whenever I go to rehearsals, gigs or the studio – you never know when it’ll come in handy …
My re-design is meant to combine extreme signal fidelity along with robust construction techniques,(ie., hand-soldered and hand-selected parts, using thick CNC’d PCB boards with 1 mm wide tracing) and a compact footprint – in inches: 5.72 x 4.77 x 1.39
here’s a clip of the viva Analog 360+ Lite unit in action:
FAQ: A good quality power amplifier is required to drive a speaker cab following the 360+ as it only provides the preamp (tone shaping) function in the signal chain – and not the power driving function … in the original Acoustic 360/361 rig the power amplifier was part of the 361 1×18 “powered” cab … other powered “cabs” can be used in principle / maybe requiring a simple coupling box if the input is differential (eg., as in recent units made by ISP, GK, etc …) … For bass use it is highly recommended to be driving a good quality speaker cab, in some cases a 1×18 to get the characteristic Jaco/JPJ “360” sound … though, nowadays good variations on drivers are being made and alternatives to the low-end concept are available – Eden being one high-quality speaker designer that comes to mind
120vac/2.1mm/24vdc power adapter included with orders to USA/Canada ONLY … customers abroad need to supply their own according to their line voltage requirements AND the required jack/plug polarity (CENTER NEGATIVE ONLY)
In case of loss the power adapter can be replaced by either 24vdc LINEAR-UNREGULATED or SWITCH-MODE // with a 2.1mm plug wired center-negative … The 360+ is protected against reverse polarity as well
PRICE IN US DOLLARS, includes air shipping to USA/Canada only // to other countries shipping is extra (please be advised) …
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