Ion Audio's popular line of USB turntables all have different features and prices. This side-by-side comparison should help you shop for the best one. All three units are both PC and Mac compatible.

Ion TTUSB

This USB Turntable is the most basic of the three USB turntables. One of the main differences is the absence of a dust cover; the plastic hinged top cover. Other than that, and some other minor differences in aesthetics and form factor, this turntable will perform all of the main features you're looking for including vinyl-to-mp3 conversion via USB, simple 33 1/3 and 45 RPM playback and recording, 78 recording (with included software), and even a 1/8" line-in which allows you to input any audio source (such as a cassette player) and convert to MP3.

List of Features:
Plug and Play - No Special Drivers Required
PC and MAC Compatible
33 1/3 and 45 RPM playback
78 Recording Supported by the included recording software
Integrated Switchable Phono/Line Level RCA Output Cable
1/8" Stereo Line Input for digitizing from other sources such as cassette players
S-Shaped Tone Arm
Adjustable Anti-Skate Control for better stereo balancing

Included Accessories:
Cartridge
Slip Mat
USB Cable
Counterweight
45 RPM Adapter
Software CD

Ion TTUSB05

The Ion TTUSB05 is the next level up featuring all of the main functionality of the TTUSB, but with added amenities such as a dust cover, a ruggedized integrated RCA output cable, and a straight tone arm. One feature this model has that no other Ion USB turntable has is the auto-return feature after playback completes. The TTUSB05 is the only USB turntable by Ion that doesn't feature adjustable anti-skate control for better stereo balancing.

List of Features:
Plug and Play - No Special Drivers Required
PC and MAC Compatible
33 1/3 and 45 RPM playback
78 Recording Supported by the included recording software
Integrated Line Level RCA Output Cable
Straight Tone Arm
Dust Cover
Front-facing Controls
Auto-return after playback completes

Included Accessories:
Cartridge
Slip Mat
USB Cable
Counterweight
45 RPM Adapter
Software CD

Ion TTUSB10

The TTUSB10 has every feature the other two have, including adjustable anti-skate control (for consistant stereo balance), a dust cover, and other features like a tone arm lift lever, and an S-shaped tone arm. The TTUSB10 does not share the TTUSB05's ability to auto-return after playback is over.

List of Features:
Plug and Play - No Special Drivers Required
PC and MAC Compatible
33 1/3 and 45 RPM playback
78 Recording Supported by the included recording software
Integrated Switchable Phono/Line Level RCA Output Cable
1/8" Stereo Line Input for digitizing from other sources such as cassette players
S-Shaped Tone Arm
Adjustable Anti-Skate Control for better stereo balancing
Dust Cover
Sleek, updated design
Tone Arm Lift Lever

Included Accessories:
Cartridge
Slip Mat
USB Cable
Counterweight
45 RPM Adapter
Software CD