aion HELIOS Manual - Page 3

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PARTS LIST

This parts list is also available in a spreadsheet format which can be imported directly into Mouser for

easy parts ordering. Mouser doesn't carry all the parts—notably potentiometers—so the second tab lists

all the non-Mouser parts as well as sources for each.

View parts list spreadsheet

PART

VALUE

47R

560R

1k5

10k

47R

R10

100k

R11

100k

RPD

2M2

LEDR

4k7

22n

OMIT

100pF

2.2uF

4.7uF

3n3

22n

C10

1uF

C11

100n

C12

100uF

C13

47uF

CX1

1uF

HELIOS CLASSIC DISTORTION

→

TYPE

Metal film resistor, 1/4W

Film capacitor, 7.2 x 2.5mm

MLCC capacitor, NP0/C0G

Electrolytic capacitor, 4mm

Film capacitor, 7.2 x 2.5mm

Film capacitor, 7.2 x 3.5mm

MLCC capacitor, X7R

Electrolytic capacitor, 6.3mm

Electrolytic capacitor, 5mm

Film capacitor, 7.2 x 3.5mm

NOTES

Input pulldown resistor. Can be as low as 1M.

LED current-limiting resistor. Adjust value to change LED brightness.

Leave empty for OP07. Use 33pF here if using a LM308N.

Can instead use CX1 for a 1uF film cap. No audible EQ difference

between 4.7uF and 1uF and film caps have better sound quality.

Power supply filter capacitor.

Reference voltage filter capacitor.

Alternative for C7. No audible EQ difference between 4.7uF and 1uF

and film caps have better sound quality.