Enclosure not stated · 4 knobs
Boss FZ2 Boost/Eq & PedalPCB Hyped Boost
Based on the Boss FZ2 Boost/Eq & PedalPCB Hyped Boost
From the post
Boss FZ2 has a very powerfull boost setting which is great for driving tube amps. It also has a powerful eq. Some people requested this, not wanting to build the whole FZ2 circuit which is quite big! So here is two layouts, one stock with a FET input buffer and a discrete FET/PNP BJT op amp. The other one is Hyped Boost, the "cheat" version with a dual op amp for the input buffer and boost.
Schematic
This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Dirtbox Layouts. No KiCad fragment has been drawn for this circuit yet.
Parts list 30 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 10 | ||||
| ×6 | 10K | 10k | read from the layout by eye | |
| ×4 | 100K | 100k | read from the layout by eye | |
| ×2 | 1K | 1k | read from the layout by eye | |
| ×2 | 2.2K | 2.2k | read from the layout by eye | |
| ×2 | 3.3K | 3.3k | read from the layout by eye | |
| ×1 | 22K | 22k | read from the layout by eye | |
| ×1 | 1M | 1M | read from the layout by eye | |
| ×1 | 1.5K | 1.5k | read from the layout by eye | |
| ×1 | 4.7K | 4.7k | read from the layout by eye | |
| ×1 | 56K | 56k | read from the layout by eye | |
| Capacitors 9 | ||||
| ×2 | 47pF | 47p | read from the layout by eye | |
| ×1 | 15nF | 15n | read from the layout by eye | |
| ×2 | 47nF | 47n | read from the layout by eye | |
| ×1 | 150nF | 150n | read from the layout by eye | |
| ×2 | 1uF | 1u | electrolytic; read from the layout by eye | |
| ×1 | 2.2uF | 2.2u | electrolytic; read from the layout by eye | |
| ×3 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×1 | 47uF | 47u | electrolytic; read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| D1 | ? | ? | value not given; read from the layout by eye | |
| Transistors 5 | ||||
| Q1 | 2SK184-GR | 2SK184-GR | JFET; read from the layout by eye | |
| Q2 | 2SK118 | 2SK118 | JFET; read from the layout by eye | |
| Q3 | 2SK118 | 2SK118 | JFET; read from the layout by eye | |
| Q4 | 2SA1335 | 2SA1335 | read from the layout by eye | |
| Q5 | 2SC3378 | 2SC3378 | read from the layout by eye | |
| ICs 1 | ||||
| IC1 | 1458 | 1458 | read from the layout by eye | |
| Potentiometers 4 | ||||
| High | B50K | B50k | Potentiometer | read from the layout by eye |
| Low | B50K | B50k | Potentiometer | read from the layout by eye |
| Gain | A50K | A50k | Potentiometer | read from the layout by eye |
| Level | A50K | A50k | Potentiometer | read from the layout by eye |