MOTM

If you aleady have audio sources (like other synths or drum machines), then 
always start with filters. At least you can hear stuff change as you play 
around.

Note: the full-blown kits are no longer available, you have to provide some 
parts yourself (I always suggest startingwith this page):

http://www.hotrodmotm.com/parts_list.htm

What I suggest is:

MOTM-900 power supply (this IS a full kit)
MOTM-19A rails
MOTM-410 Triple Res VCF parts (pc board, front panel, BR-1 bracket and the 
Extra Parts Kit)

The MOTM-410 is fully 'stand alone', it has 3 BP filters and 2 LFOs (that 
can, but do not have to be, externally controlled by CV).

Once you can build these successfully, then I would get next a MOTM-490 
"set" and a MOTM-420 "set". These are also filters, but sound quite 
differently. These are NOT "self contained", you will need some sort of CV 
to modulte them (twisting knobs gets old quickly). The cheapest and most 
useful is a MOTM-390 Dual LFO.

The key to building any of these is to get a REALLY GOOD soldering iron, 
that is 35 to 45 watts, with a 700F tip. I suggest this one:


http://www.cooperhandtools.com/brands/cf_files/model_detail.cfm?upc=037103059963

Weller WLC100 which is around $50, the price will vary so shop the 'net. If 
you want a REALLY good station, the best made (I have one that is 27 years 
old) is the Weller WTCPT:
http://www.cooperhandtools.com/brands/CF_Files/model_detail.cfm?upc=037103001146

which is really 43 W (why they say 60W is beyond me, it's been 43W sinch the 
70s). These are around $150, but I've seen them as low as $99 in places. 
This is the best soldering iron ever made, IMHO.

Paul S.