The Boss Dr Sample SP202 is a portable 4-voice stereo sampler designed primarily for DJ use and live performance. 

Core Features

• 16-bit stereo sampling with 4-voice polyphony
• Built-in effects including filters and ring modulator
• Built-in microphone plus external audio inputs
• BPM calculator with tap tempo
• Smart Media card expansion slot
• Sample storage retention without power
• Battery or AC power operation
• MIDI input functionality

Sampling

• Resolution: 16-bit
• Sampling Frequencies:
  - Hi-Fi: 31.25kHz
  - Standard: 15.63kHz
  - Lo-Fi 1: 7.81kHz
  - Lo-Fi 2: 3.91kHz
• Internal Memory: ~500K
• Maximum Sample Time (Internal Memory):
  - Hi-Fi: 32 seconds (mono)
  - Lo-Fi 2: 4 minutes 27 seconds (mono)

Audio Connections

• Stereo line out (-10dBm)
• Stereo line in (+4dBm)
• Mic input (-60dBm to 30dBm)
• Headphone output (mini-jack)
• External mic input (1/4" jack)

Effects Section

• Pitch (-20% to +10%)
• Time stretch (-50% to +25%)
• Delay (64th note to whole note)
• Two low-pass filters
• Ring modulator
• Note: Only one effect can be used at a time (except Pitch)

Strengths

1. Excellent audio quality in Hi-Fi mode and distinct Lo-Fi character when needed
2. Quick and intuitive sampling process
3. Impressive sampling times with memory expansion
4. Portable design with reliable battery operation
5. Built-in mic for quick sampling
6. Distinctive ring modulator effect
7. Smart Media card support for storage expansion

Limitations

1. Limited 4-voice polyphony (reduced with effects)
2. Basic sample editing capabilities
3. Restricted MIDI implementation
4. Effect routing limitations
5. No footswitch option
6. Power supply not included

Use Cases

• DJ performance and loop sampling
• Live performance effects
• Quick sample capture and playback
• Basic sound reinforcement
• Portable sampling workstation

Size&Weight&Power

• Dimensions: 83mm x 145mm x 221mm (HxWxD)
• Weight: 850g with batteries
• Power: 6x AA batteries or 9V DC adapter
• Battery life: Up to 8 hours continuous use

At the time of its release, the SP-202 offered a good value for users needing a straightforward, portable sampling solution. While it had limitations in MIDI implementation and editing capabilities, its sound quality and ease of use made it an attractive option for live performance and DJ applications.