Possible Clues:

• Like the earliest recordings
• Not-so-great sound quality, informally
• Reproduction quality (hyph.)
• Cassette culture sound (hyph.)
• Flawed recording (hyph.)
• Opposite of 10-Across?
• Not hi-fi
• High-level apartment falling short (one with limited technology)
• Like muffled sound recordings, slangily
• Contributor to downfall of industry spurning technology