N.E.W. Apostle kit

Item number: 4357


Category: God City Instruments


starting from 55,00 €

Final price incl. VAT, plus shipping (mitttel)


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The N.E.W. Apostle is a Jfet interpretation of a classic amp design and can be switched between Orange OR120 and Matamp GT120 style.

This kit contains all necessary parts, including the pcb: Parts list

Knobs for the pots are not included in the kit, you can select them yourself. The pots have round 6.3mm shafts.

Here´s the build documentation:
N.E.W. Apostle docs

Instrument: Guitar
Effect-Type: Amp-Sim

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Total entries: 1
5 from 5 Original and beautiful thick sounds from this Orange and Matamp amp heads emulation.

This build was a bit more challenging than expected, but with some patience and some help from diystompboxes forum, I am pleased with the final result.

First I had some trouble with the FAC switch, because there arent any wiring instructions in the build docs.
I had to look for exemples on the GCI facebook group to figure it out.

You need to solder one leg of each of the six capacitors to the six first rotary switch terminals, and connect together all the remaining legs with some jumper. One pcb pad is connected to the jumper, the other to the middle rotary switch terminal.

Then, I noticed an noticeable popping noise on activation, despite all the usual tricks (AMZ led popping fix, 10k led resistor...).
I managed to get rid of it thanks to an extra 10n DC blocking capacitor in series with R2, see reply #13 :

Caution with transistors, 2N5457 datasheet mentions that 25V is the max limit :

Moreover, with a 36V charge pump, any slight offset, when using various power supplies, will be increased 4 times. So with 0.50V difference, there is a 2V offset in transistors biasing.
On my build, Q3 shows some voltage oscillations. I biased it around 18V on the top of the oscillation, when the pedal was engaged, with a signal and some gain going through the circuit. I think the effect sounds a bit more precise and sharper this way.

I should also mention that the drilling templates are slightly wrong on my build : tips of both jacks are touching the board when plugged. Not really a big issue, but if the pots holes were 3 or 4mm lower, it would be perfect.

The mod toggleswitch is a nice addition, there is some subtle and interesting changes in the sound character.

With boost and gain at high settings, it easily goes into fuzz territory. FAC switch allows to add more thickness to the sound. I tried it with guitar and bass, Id say it is more suited for guitar, but it can easily be very pleasant on bass on low gain settings, thanks to the powerful Bass control and the FAC switch.

Drill template is a bit off and no wiring instructions for the rotary switch. But i still give

All my thanks to GCI and musikding for this great kit !

., 23.02.2023
Total entries: 1

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