All prices are in pounds sterling.

PCBs & kits.
PCB002	Trimodal Power Amplifier PCB & Set of Construction Notes	£27.50
KIT002	Trimodal Power Amplifier. PCB002 plus all parts to build it	£125.00
PCB003	Precision Preamplifier 96 (MRP11) PCB & Set of Construction Notes	£66.00
KIT003	Precision Preamplifier. PCB003 plus all parts to build it	£245.00
PCB004	Load Invariant Power Amplifier PCB & Set of Construction Notes	£33.00
KIT004	Load Invariant Power Amplifier. PCB004 plus all parts to build it	Coming soon
PCB005	Class-G Power Amplifier PCB & Set of Construction Notes	£33.00
KIT005	Class-G Power Amplifier. All parts to build the PCB. Please note that this kit does now include the PCB.	£125.00
	Overseas Package & Postage	£5.00
	For details of kit contents see the page for that product.

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

Semiconductors
2SB737	PNP Low Noise Transistor	£0.75
MPSA06	NPN Small-Signal Transistor	£0.12
MPSA56	PNP Small-Signal Transistor	£0.24
MJE340	NPN Driver Transistor	£0.55
MJE350	PNP Driver Transistor	£0.90
MJ802	NPN Power Transistor TO3	£3.75
MJ4502	PNP Power Transistor TO3	£4.50
2SC3281	NPN Power Transistor Sustained beta TO3-P	£9.00
2SA1302	PNP Power Transistor Sustained beta TO3-P	£7.50
TSC506	TO3-P Dual Mounting Clip	£0.50

COMPONENT QUANTITIES
The table below gives the numbers of semiconductors required for each PCB. Quantities for the power amplifiers are based on a per-PCB quantity, so double them for a stereo amplifier. The preamplifier is a stereo PCB so do not double in this case.

Component	Trimodal	Load Invariant	Preamplifier
MJ802	1	0	0
MJ4502	1	0	0
2SB737	0	2	6
MJE340	2	2	0
MJE350	1	1	0
MPSA06	10	6	0
MPSA56	6	6	0
2SC3281	0	2	0
2SA1302	0	2	0
TSC506	0	2	0

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.