If all you want is an NSF playing cartridge for a famicom, why not get a PowerPak and 72 to 60 pin converter? I do this and it works just fine.

If you want something that does expansion audio from a second cart, there's the TNS-HFC3, which is still available so far as I know.

Cool device.  They discontinued their portable NSF player and monster audio slot expansion though, which I thought were some of their coolest offerings.  Either contact a friend who lives in Japan or try to get in on a groupbuy, one might pop up in #famitracker eventually.

oh well thats neato, i learned something new

the HFC2 can change nsf without you relying on seeing a screen for input

Familiar with the term Hen's Teeth?

Walter+ it lets you play expansion audio using real chips.

im not sure what this is cause of the language barrier on the site. does something make it different from using a powerpak for nsf playback?

Does anyone know where an TNS-HFC2 NSF Playback cart can be obtained? I'm not sure he's actually actively producing them anymore, but if you know where to get one / have one you'd part with, lmk

http://www2s.biglobe.ne.jp/~tns/tnshfc2.html