Enclosure not stated · 5 knobs
AMT E1 preamp (SMD)
- Category
- Preamp / Amp-in-a-box
- Price
- see vendorin stock
From the vendor
AMT E1 preamp ENGL 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 81 rows
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Check before you build · 3 values the reader of this schematic was not sure of
- J3, J4, J5, J7, J8 JFET types not printed (J2/J6 are 2SK208)
- R13, C11, C20, C21, D3, J4 drawn without designators; numbering inferred
- author's own '???' notes on R8, R12, R16, R22, R31 (original values 510, 600, 620, 100, 12k?)
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 36 | ||||
| R1 | 1meg | 1M | read from the schematic by eye | |
| R2 | 6.8K | 6.8k | read from the schematic by eye | |
| R3 | 2.4k | 2.4k | read from the schematic by eye | |
| R4 | 100 | 100 | read from the schematic by eye | |
| R5 | 330k | 330k | read from the schematic by eye | |
| R6 | 47k | 47k | read from the schematic by eye | |
| R7 | 13k | 13k | read from the schematic by eye | |
| R8 | 5k | 5k | note: org 510 ???; read from the schematic by eye | |
| R9 | 220k | 220k | read from the schematic by eye | |
| R10 | 220k | 220k | read from the schematic by eye | |
| R11 | 13k | 13k | read from the schematic by eye | |
| R12 | 6k | 6k | note: org 600 ???; read from the schematic by eye | |
| ×1 | 220k | 220k | no designator printed (R13 position), J4 gate to ground; read from the schematic by eye | |
| R14 | 220k | 220k | read from the schematic by eye | |
| R15 | 12k | 12k | read from the schematic by eye | |
| R16 | 6.2k | 6.2k | note: org 620 ???; read from the schematic by eye | |
| R17 | 33 | 33 | read from the schematic by eye | |
| R18 | 47k | 47k | read from the schematic by eye | |
| R19 | 520k | 520k | read from the schematic by eye | |
| R20 | 220k | 220k | read from the schematic by eye | |
| R21 | 10k | 10k | read from the schematic by eye | |
| R22 | 1k | 1k | note: org 100 ???; read from the schematic by eye | |
| R23 | 450 | 450 | read from the schematic by eye | |
| R24 | 100k | 100k | read from the schematic by eye | |
| R25 | 3meg | 3M | read from the schematic by eye | |
| R26 | 10k | 10k | read from the schematic by eye | |
| R27 | 10k | 10k | read from the schematic by eye | |
| R28 | 12k | 12k | read from the schematic by eye | |
| R29 | 680k | 680k | read from the schematic by eye | |
| R30 | 100k | 100k | read from the schematic by eye | |
| R31 | 150k | 150k | note: org 12k ???; read from the schematic by eye | |
| R32 | 300k | 300k | read from the schematic by eye | |
| R33 | 6.2k | 6.2k | read from the schematic by eye | |
| R34 | 1.2k | 1.2k | read from the schematic by eye | |
| R35 | 12k | 12k | read from the schematic by eye | |
| R36 | 47k | 47k | read from the schematic by eye | |
| Capacitors 27 | ||||
| C1 | 100u | 100u | read from the schematic by eye | |
| C2 | 0.28u | 280n | read from the schematic by eye | |
| C3 | 220n | 220n | read from the schematic by eye | |
| C4 | 22n | 22n | read from the schematic by eye | |
| C5 | 22u | 22u | read from the schematic by eye | |
| C6 | 2.2n | 2.2n | read from the schematic by eye | |
| C7 | 10n | 10n | C7 marked '?'; read from the schematic by eye | |
| C8 | 100u | 100u | read from the schematic by eye | |
| C9 | 22u | 22u | read from the schematic by eye | |
| C10 | 10n | 10n | read from the schematic by eye | |
| C12 | 22u | 22u | read from the schematic by eye | |
| C13 | 470uF | 470u | read from the schematic by eye | |
| C14 | 0.47u | 470n | read from the schematic by eye | |
| C15 | 100u | 100u | read from the schematic by eye | |
| C16 | 47n | 47n | read from the schematic by eye | |
| C17 | 22n | 22n | read from the schematic by eye | |
| C18 | 520p | 520p | read from the schematic by eye | |
| C19 | 100uF | 100u | read from the schematic by eye | |
| C22 | 100uF | 100u | read from the schematic by eye | |
| C23 | 10n | 10n | read from the schematic by eye | |
| C24 | 1n | 1n | read from the schematic by eye | |
| C25 | 1n | 1n | read from the schematic by eye | |
| C26 | 1n | 1n | read from the schematic by eye | |
| C27 | 220n | 220n | read from the schematic by eye | |
| ×1 | 47n | 47n | no designator printed, J3 drain to J4 stage coupling; read from the schematic by eye | |
| ×1 | 460n | 460n | no designator printed, J5 output coupling; read from the schematic by eye | |
| ×1 | 10n | 10n | no designator printed, Switch1 to J6 gate coupling; read from the schematic by eye | |
| Diodes 4 | ||||
| D1 | BAT54_ZX | BAT54_ZX | read from the schematic by eye | |
| D2 | BAT54_ZX | BAT54_ZX | read from the schematic by eye | |
| ×1 | BAT54_ZX | BAT54_ZX | no designator printed, J4 gate; read from the schematic by eye | |
| D4 | 1N4148 | 1N4148 | marked '?'; read from the schematic by eye | |
| Transistors 8 | ||||
| J1 | 2N5458 | 2N5458 | read from the schematic by eye | |
| J2 | 2SK208R | 2SK208R | read from the schematic by eye | |
| J3 | JFET | JFET | type not printed; read from the schematic by eye | |
| ×1 | JFET | JFET | J4 stage, no designator or type printed; read from the schematic by eye | |
| J5 | JFET | JFET | type not printed; read from the schematic by eye | |
| J6 | 2SK208 | 2SK208 | printed J2SK208; read from the schematic by eye | |
| J7 | JFET | JFET | type not printed; read from the schematic by eye | |
| J8 | JFET | JFET | type not printed; read from the schematic by eye | |
| Potentiometers 5 | ||||
| Gain | A50k | A50k | Potentiometer | read from the schematic by eye |
| High | B100k | B100k | Potentiometer | read from the schematic by eye |
| Low | A500k | A500k | Potentiometer | read from the schematic by eye |
| Mid | B10k | B10k | Potentiometer | read from the schematic by eye |
| Level | A500k | A500k | Potentiometer | read from the schematic by eye |
| Switches 1 | ||||
| Switch1 | SPDT | SPDT | selects IN or preamp output into the cab-sim stage; read from the schematic by eye | |