Groove Sampling Workstation


The BOSS SP-505 Groove Sampling Workstation is the ultimate tool for working with samples, loops and laying down beats. With eight voices of CD-quality sampling, cool Chop and BPM Sync functions—plus a 4-part sequencer and 26 killer DSP effects—the SP-505 has everything groove musicians need to build cutting-edge tracks.

More Than Meets The Eye

In the past, owning a compact sampler meant sacrificing features found in software and high-end machines. The new SP-505 changes all that with helpful tools like sample Chop, for dividing loops into individual samples, and automatic BPM sync of phrases. And with onboard sequencing and professional-quality effects, you get a lot more than you pay for with this cool, tabletop groove sampling workstation.

Powerful Sample Editing

In addition to its 8-note, CD-quality sampling—with the ability to pitch samples chromatically—the SP-505 provides several powerful editing functions. A graphic LCD with waveform display allows you to zoom in when editing Start and End points or boost the level of a specific waveform range. The aforementioned Chop function is great for dividing loops into individual “slices,” which can then be replayed and rearranged at will. And with automatic BPM Sync, getting your loops together is a snap.

4-Part Sequencing with Adjustable Swing

A complete sampling workstation, the SP-505 features a 4-part sequencer with 15,000-note capacity, plus a Swing function for creating shuffle patterns. By mapping individual samples to the pads, you can create custom drum grooves and even overdub loops. Or, create sequences using the SP-505’s internal ROM Tones, which include a selection of drums, basses and synths. A Pattern Select feature makes changing patterns easy using the 16 pads—great for live performance.

Killer Effects Processing and Resampling

With 26 onboard effects, you can twist your samples into just about any sound imaginable. These high-quality groove effects include a new Vinyl Simulator, plus favorites like Isolator, Filter+Drive, Slicer, Reverb, Tape Echo and more—all of which can be controlled in real time using the knobs, or even re-sampled to another pad.

SmartMedia Slot, .WAV Compatibility and More

While the SP-505’s internal memory provides more than two minutes of CD-quality mono sampling, this can be expanded to over one hour using an optional 128MB SmartMedia card. These cards can also store sequencer data, and can be used to import .WAV/AIFF files from a computer as well. And with a choice of Mic, Line, or Coaxial and Optical digital inputs, you can sample virtually any source and process sounds though the internal effects.

Maximum Polyphony
8 notes
Internal Memory
Samples: 250 (16 banks)
Expansion Card Memory
Samples: 256 (16 banks)
Maximum Sampling Time
Internal (times approximate)
STANDARD: 2 minutes, LONG: 5 minutes, LO-FI: 17 minutes
Memory card (times approximate)
8 MB; STANDARD: 4 min, LONG: 8 min, LO-FI: 24 min
16 MB; STANDARD: 8 min, LONG: 16 min, LO-FI: 49 min
32 MB; STANDARD: 16 min, LONG: 32 min, LO-FI: 98 min
64 MB; STANDARD: 32 min, LONG: 64 min, LO-FI: 197 min
128 MB; STANDARD: 64 min, LONG: 129 min, LO-FI: 395 min
Sampling Frequency
STANDARD: 44.1 kHz
LONG: 22.05 kHz
LO-FI: 11.025 kHz
Track Recording Methods
Event recording (Realtime/Microscope Edit)
Audio recording
Number of Recordable Events (pad operations)
Approximately 15,000 events
Signal Processing
AD conversion: 20 bit
DA conversion: 20 bit
Nominal Input Level
Input (line): -10 dBu
Input (mic): -55 to -25 dBu
Input Impedance
Input (line): 50 k ohms
Input (mic): 2 k ohms
Nominal Output Level
Output (line): -10 dBu
Output Impedance
2 k ohms
PHONES jack (Stereo 1/4 inch phone type)
MIC jack (1/4 inch phone type)
LINE OUT jacks L/R (RCA phono type)
LINE IN jacks L/R (RCA phono type)
DIGITAL IN connectors (optical/coaxial)
FOOT SW jack (1/4 inch phone type)
MIDI connectors (IN/OUT)
AC Adaptor jack (AC 14 V)
Power Supply
AC Adaptor (BRC series)
Current Draw
800 mA
800 mA
AC Adaptor (BRC series)
Foot Switch: FS-5U
Size and Weight
298 mm
11-3/4 inches
254 mm
10 inches
64 mm
2-9/16 inches
1.4 kg
3 lbs. 2 oz.
* 0 dBu = 0.775 Vrms
*The specifications are subject to change without notice.


Brochures & Catalogs

Updates & Drivers


If you have questions about operating your BOSS product, please check our Knowledge Base for answers to the most common questions.
You can also contact our Product Support department by phone or email.
In addition, we have a library of Owner’s Manuals and Support Documents that you can download and reference.

Support Documents