Enclosure not stated · 5 knobs
AMT R1 preamp (SMD)
- Category
- Preamp / Amp-in-a-box
- Price
- see vendorin stock
From the vendor
AMT R1 preamp Dual Rectifier emulator with cab sim
use pcb`s
EQ pcb for AMT 1 series Controls PCB for AMT 1 series Switch board for AMT 1 series
Schematic
The schematic image is on the project page. Open it at PCBWay.
Parts list 46 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
Check before you build · 6 values the reader of this schematic was not sure of
- 2SK208R ×6: the hand-drawn schematic only names VT9 (2N5458); the type of VT2/VT4-VT8 is taken from the SMD layout silkscreen
- diode (supply reverse-polarity diode): no value written
- 1N4148: schematic says '1N4148? BAT42?', layout says 1N4148
- Treble/Bass/Middle/Volume: pots are unlabeled on the schematic (only 100K LIN, 500K LOG, 10K LIN, 500K LOG); names inferred from the FMV stack and master position
- Alternates marked * on the drawing (4K3 for 6K2, 0R for 270, 1K5 for 3K3, 100K for 56K, 10nF for 4.7nF, 3.3nF for 6.8nF, 1nF for 22nF, 33K for 51K, 1M5 for 680K, 16K-36K for 24K) were not used
- 33nF marked '#*' across the 56K may be optional
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 23 | ||||
| ×1 | 33 | 33 | read from the schematic by eye | |
| ×2 | 100 | 100 | read from the schematic by eye | |
| ×1 | 270 | 270 | read from the schematic by eye | |
| ×1 | 470 | 470 | read from the schematic by eye | |
| ×1 | 620 | 620 | read from the schematic by eye | |
| ×1 | 680 | 680 | read from the schematic by eye | |
| ×1 | 1k | 1k | read from the schematic by eye | |
| ×1 | 3k3 | 3.3k | read from the schematic by eye | |
| ×1 | 6k2 | 6.2k | read from the schematic by eye | |
| ×4 | 10k | 10k | read from the schematic by eye | |
| ×2 | 12k | 12k | read from the schematic by eye | |
| ×1 | 22k | 22k | read from the schematic by eye | |
| ×1 | 24k | 24k | read from the schematic by eye | |
| ×2 | 47k | 47k | read from the schematic by eye | |
| ×1 | 51k | 51k | read from the schematic by eye | |
| ×1 | 56k | 56k | read from the schematic by eye | |
| ×1 | 100k | 100k | read from the schematic by eye | |
| ×3 | 220k | 220k | read from the schematic by eye | |
| ×1 | 330k | 330k | read from the schematic by eye | |
| ×1 | 390k | 390k | read from the schematic by eye | |
| ×2 | 680k | 680k | read from the schematic by eye | |
| ×1 | 1M | 1M | read from the schematic by eye | |
| ×1 | 3M | 3M | read from the schematic by eye | |
| Capacitors 13 | ||||
| ×1 | 1n | 1n | read from the schematic by eye | |
| ×1 | 4n7 | 4.7n | read from the schematic by eye | |
| ×1 | 6n8 | 6.8n | read from the schematic by eye | |
| ×3 | 10n | 10n | read from the schematic by eye | |
| ×2 | 22n | 22n | read from the schematic by eye | |
| ×1 | 33n | 33n | read from the schematic by eye | |
| ×4 | 47n | 47n | read from the schematic by eye | |
| ×2 | 100n | 100n | read from the schematic by eye | |
| ×1 | 220n | 220n | read from the schematic by eye | |
| ×1 | 470n | 470n | read from the schematic by eye | |
| ×2 | 3u3 | 3.3u | read from the schematic by eye | |
| ×4 | 100u | 100u | read from the schematic by eye | |
| ×1 | 470u | 470u | read from the schematic by eye | |
| Diodes 3 | ||||
| ×4 | BAT54 | BAT54 | read from the schematic by eye | |
| ×1 | 1N4148 | 1N4148 | read from the schematic by eye | |
| ×1 | Diode | DIODE | read from the schematic by eye | |
| Transistors 2 | ||||
| ×1 | 2N5458 | 2N5458 | read from the schematic by eye | |
| ×6 | 2SK208R | 2SK208R | read from the schematic by eye | |
| Potentiometers 5 | ||||
| Gain | A50k | A50k | Potentiometer | read from the schematic by eye |
| Treble | B100k | B100k | Potentiometer | read from the schematic by eye |
| Bass | A500k | A500k | Potentiometer | read from the schematic by eye |
| Middle | B10k | B10k | Potentiometer | read from the schematic by eye |
| Volume | A500k | A500k | Potentiometer | read from the schematic by eye |