The MZ-R55 lacks "net MD" functions, so recording must be done in real-time from the computer.

Using TOSLINK for digital recording requires the unit to be in Sync Rec mode for automatic track marking.

The champagne color of the Sony MZ-R55 is disliked by some, despite its functionality and features like TOSLINK input for digital connections.

Some owners have successfully used TOSLINK input to create playlists across multiple CDs, which the recorder handles automatically with track precision.

Some users experience issues with USB sound cards not being recognized for optical out; configuring for stereo sound only can resolve this.

Older USB sound cards like MD-PORT DG2 may require multiple plug-ins to be recognized by Windows.

Startech ICUSBAUDIO7D and Behringer UCA222 are recommended USB sound cards with optical outputs for better quality digital recording.

For analog recording, start with the source volume at 100% and adjust downward to avoid distortion.

Using a Toslink connection from a smart TV's optical output is a workable low-cost option for music transfer.

Owners report that the device is a "battery thief," with the gumstick battery having notably short life, often necessitating the use of a battery sidecar.

Despite their age, these units are praised for their durability, with some users noting their devices still function well after many years.

Some users find the R55 quieter than other models, despite its full sound quality.

The R55 is praised for its sound quality, often described as superior to newer models, despite its known battery life issues with gumstick batteries.

A user noted acquiring a Sony MZ-R55 for €20 in Europe and $30 in the USA, indicating variable pricing in different markets.

Owners note that the R55 provides a more "full" sound compared to the R70 and R500, possibly due to higher output impedance affecting tonal balance.