Reference | Quantity | Description | Handmade Electronics | Welborne Labs | Digi-Key | Mouser | Notes |
C1, C9L/R, C10L/R | 5 | ≥100uF electrolytic cap | Elna
Silmic II 3-RFS-10001000 (100uF) |
Elna
Cerafine ROA104 (100uF) |
Panasonic
FC P10348-ND (270uF) P10352-ND (470uF) |
Nichicon
UPW 647-UPW1J271MHD (270uF) 647-UPW1J471MHD3 (470uF) |
Voltage rating should be no less than 35V. 7.5mm pin spacing, 16mm diameter. Alternate pin spacing is provided for 5mm pins. |
C7L/R | 2 | ≥100uF electrolytic cap | Elna
Silmic II 3-RFS-10001000 (100uF) |
Elna
Cerafine ROA104 (100uF |
Panasonic
FC P10348-ND (270uF) P10352-ND (470uF) |
Nichicon
UPW 647-UPW1J271MHD (270uF) 647-UPW1J471MHD3 (470uF) |
The
output coupling caps determine the low frequency cutoff
point.
For 100uF is the lowest recommended value. For headphones
with
impedances <150 ohms, up to 470uF is appropriate. 35V,
7.5mm
pin spacing, 16mm diameter. Alternate pin spacing is provided
for
5mm pins. |
C2L/R | 2 | ≥220uF electrolytic cap | Nichicon Muze KZ 3-4030 | Elna Cerafine ROA220 | Panasonic
FC P10346-ND |
Nichicon
UPW 647-UPW1H221MPD |
Voltage rating should be no less than 16V. 5mm pin spacing, 10.5mm diameter |
C3L/R, C4L/R, C5L/R, C8L/R | 8 | 0.22uF film cap | Wima MKP10 WM210 (0.10uF) | Panasonic Polypropylene P3224-ND | Wima
MKP10 505-M100.1/160/5 Xicon Metalized Polypropylene 1429-2224 |
Placements
provided for film capacitors with pin spacing of 5mm, 10mm and
15mm. See note below for alternate supplier. The Mouser Wima part is a 0.1uF capacitor. That's fine - the exact value is not important. |
|
C6L/R | 2 | 0.01uF axial ceramic cap | 1103PHCT | 80-C410C103K5R | |||
D1 | 1 | P6KE30 Transient Supressor | P6KE30ADICT | 511-P6KE30A | |||
D2L/R | 2 | 1N5291 or J503 CRD | 610-1N5291 J503 |
Locations are provided on the board for the 1N5291 and the J503. Do not populate both diode types! Use either the 1N5291 or the J503, but not both. Also, do not mix and match - use two 1N5291s or two J503s, but not one of each. You've been warned... | |||
PF1 | 1 |
RXE050 PTC Fuse | Raychem RXE050 | 650-RXE050 | |||
RLED, R3R/L R5R/L | 5 | 1KOhm, 1/4W Resistor | Vishay Dale V4-1.0K | 1.00KXBK-ND | Vishay Dale 71-RN60D-F-1.0K | Any 1KOhm 1% 1/4W or 1/2W metal film resistor may be substituted | |
R2R/L | 2 |
5KOhm Trimpot | Bourns 3296W | Vishay/Spectrol
594-64W502 |
|||
R4R/L | 2 | 22 Ohm 1/4W Resistor | Vishay Dale V4-22.0 | 22.1XBK-ND | Vishay Dale 71-RN60D-F-22.1 | Any 22 Ohm 1% 1/4W or 1/2W metal film resistor may be substituted. Take special care to be sure that you do not accidentally order a 22.1KOhm resistor from Mouser - the part numbers are nearly identical. | |
R6R/L | 2 | 220 Ohm 1/4W Resistor | Vishay Dale V4-221 | 221XBK-ND | Vishay Dale 71-RN60D-F-221 | This sets the bandwidth of the buffers. Theoretically, it can be jumpered, but this will increase the current demands of the buffers with little sonic benefit. These resistors are optional. | |
VT1, VT2 | 2 | Tube | See notes below | ||||
Tube Sockets | 2 | 7 Pin Mini Socket, PCB Mount | See notes below | ||||
Terminal Block | 2 | 2 Position Terminal Block | Kobiconn
158-P02EK381V2 |
Optional for power and switch connections | |||
Terminal Block | 1, 2 or 3 | 3 Position Terminal Block | Kobiconn 158-P02EK381V3 |
Optional for input and output connections | |||
Headphone Jack | 1 | 1/4 inch | Neutrik NMJ6HCD2 550-22302 |
||||
Buffers | 2 | 8 Pin DIP Current Buffer | Burr
Brown BUF634P-ND Burr Brown OPA551PA-ND |
Burr
Brown 595-BUF634P |
Pads
are also provided for Intersil HA3-5002 buffers available from Arrow Electronics. If you use
the OPA551, you MUST connect pins 6 and 2. Do not stack the
OPA551. |
||
Buffer
Sockets |
2 | 8
Pin DIP Socket |
Assmann Electronics AE7313-ND | Mill
Max 575-113308 |
Any
standard 8 pin DIP socket will work here. This optional - you can
solder the buffers to the board. |
||
Pot | 1 | 50KOhm Pot | Panasonic EV-J P2T3503-ND | Pads are also provided for ALPS RK27 "Blue Velvet" potentiometer | |||
Power
Supply |
1 | 24VDC,
400mA |
CUI-Stack
DPD240040- P6P T5020-P6P |
Elpac
FW1824-760 680-FW1824-760 |
24VDC
- 30VDC, 400mA (min) |
||
DC
Jack |
1 | 2.5mm
barrel |
CP-6-ND | Kobiconn 163-1100 |
There
are a plethora of choices. Make sure that your DC jack
matches
the power supply plug |
||
Enclosure |
1 | Hammond
1455N1601 546-1455N1601 |
1601
has metal end panels, 1602 has plastic end panels. Add
letters
"BK" for a black anodized finish. Also stocked by Newark and
Allied |
Manufacturer |
Part
Number |
Tung
Sol |
12AE6 12AE6A 12FK6 12FM6 |
General
Electric |
12AE6A 12FM6 |
Sylvania |
12FK6 |
Manufacturer | Part Number |
Burr Brown | BUF634 |
Burr Brown | OPA551 |
Intersil | HA2-5003 |