One of Tokyo's longstanding record shops, with an incredibly well-curated collection of electronic bass music (the shop is Bristol's Tokyo link), reggae, dub, and related music. Owner E-jima san is very friendly, knowledgeable, and can place special orders if something is not in stock. The shop is small, but the walls are packed with great vinyl and CDs, and it alone is worth the visit to Tokyo's Shimokitazawa area.
Check http://bit.ly/DSZ_opentime for updated store hours, since the listed schedule below varies.
English blog updates here: http://dszannex.blog109.fc2.com/blog-entry-198.html
Nearest station: Shimokitazawa Station on Keio Inokashira Line or Odakyu Odawara Line.