The Signal Transfer Company

PCBs, kits of parts, and semiconductors
Price list

All prices are in pounds sterling. (GBP)

PCB002

Trimodal Power Amplifier PCB & Set of Construction Notes

27.50 ea

KIT002

Trimodal Power Amplifier. PCB002 plus all parts to build it

125.00 ea

Built002

Trimodal Power Amplifier. Fully built and tested

185.00 ea

PCB003

Precision Preamplifier: PCB, build notes, post & packing:

129.00 ea

PCB003+

Precision Preamplifier: PCB, build notes, switches, buttons:

150.00 ea

KIT003

Precision Preamplifier: Full kit comprising PCB, build notes, all PCB components:
(Excludes transformer & mains wiring, case, knobs & mechanical fixings)

355:00 ea

Built003

Precision Preamplifier: Assembled & tested PCB. Includes build notes:
(Excludes transformer & mains wiring, case, knobs & mechanical fixings)

650.00 ea

PCB004

Load Invariant Power Amplifier PCB & Set of Construction Notes

33.00 ea

KIT004

Load Invariant Power Amplifier. PCB004 plus all parts to build it

125.00 ea

Built004

Load Invariant Power Amplifier. Fully built and tested

195.00 ea

PCB005

Class-G Power Amplifier PCB & Set of Construction Notes

33.00 ea

KIT005

Class-G Power Amplifier. PCB005 plus all parts to build it

125.00 ea

Built005

Class-G Power Amplifier. Fully built and tested

195.00 ea

PCB006

RIAA phono preamp unbalanced output. PCB & Set of Construction Notes

28.00 ea

KIT006

RIAA phono preamp unbalanced output. PCB006 plus all parts to build it

152.00 ea

Built006

RIAA phono preamp unbalanced output. Fully built and tested

219.50 ea

Four changeover switch. Two per PCB

2.50 ea

PCB007

RIAA phono preamp balanced output. PCB & Set of Construction Notes

32.00 ea

KIT007

RIAA phono preamp balanced output. PCB007 plus all parts to build it

174.00 ea

Built007

RIAA phono preamp balanced output. Fully built and tested

249.00 ea

Four changeover switch. Two per PCB

2.50 ea

PCB008

Amplifier & Speaker Protection Card. PCB & Set of Construction Notes

23.00 ea

KIT008

Amplifier & Speaker Protection Card. PCB008 plus all parts to build it

77.40 ea

Built008

Amplifier & Speaker Protection Card. Fully built and tested

115.40 ea

PCB009

Compact Blameless Power Amplifier. PCB & Set of Construction Notes

23.00 ea

KIT009

Compact Blameless Power Amplifier. PCB009 plus all parts to build it

111.60 ea

Built009

Compact Blameless Power Amplifier. Fully built and tested

166.00 ea

PCB012

Low noise balanced input card. PCB & Set of Construction Notes

19.80 ea

KIT012

Low noise balanced input card. PCB012 plus all parts to build it

38.00 ea

Built012

Low noise balanced input card. Fully built and tested

58.00 ea

For details of kit contents see the page for that product.

Postage

All UK prices for kits & PCBs include First Class postage.

For non-UK destinations:

Shipping is quoted individually per order.
Standard shipping is via the UK Post Office service.
UPS Courier shipping is available on request.
All shipping is charged at cost, as quoted by the Post Office or UPS.

Some of the transistors used in these designs are specialised audio types that are not easy to obtain in small quantities. We offer a range of semiconductors used in the PCB projects.

Semiconductors:

2SB737

PNP Low Noise Transistor

2.00 ea

MPSA06

NPN Small-Signal Transistor

0.12 ea

MPSA56

PNP Small-Signal Transistor

0.24 ea

MJE340

NPN Driver Transistor TO-225AA

0.55 ea

MJE350

PNP Driver Transistor TO-225AA

0.90 ea

2SC3264

NPN Power Transistor MT-200

5.80 ea

2SA1295

PNP Power Transistor MT-200

9.34 ea

2SC3281

NPN Power Transistor Sustained beta TO3-P

9.00 ea

2SA1302

PNP Power Transistor Sustained beta TO3-P

7.50 ea

Hardware:

TSC506

TO3-P Dual Mounting Clip

0.50 ea

BAR002

Aluminium flat bar, drilled & tapped for PCB002 V4 power devices

9.50

BAR004

Aluminium flat bar, drilled & tapped for PCB004 V2 power devices

11.25

BAR005

Aluminium flat bar, drilled & tapped for PCB005 power devices

8.50

NB: We currently assume that the NE5532 and TL072 dual op-amp ICs used in the preamplifier are available worldwide. Please let us know if this is not the case.