KSP8 Features & Specs

All specifications subject to change without notice.

KSP8 Features

Analog Inputs

Connectors: Four 1/4" TRS balanced jacks standard, eight optional
Input Impedance: 20K ohms balanced, 10K or 20K ohms unbalanced
Maximum Input Level: +22dBu
Minimum Input Level(for 0dBFS): +4dBu
CMRR: > 60dB @<= 1kHz, > 40dB @ 1kHz - 20kHz
A/D Converter: 24-bit, 128x oversampling
Frequency Response: 20Hz - 20kHz +/- 0.15dB
Dynamic Range: > 110dB unweighted @ 1kHz
THD+N: < 0.0015% @ 1kHz, +19dBu
Crosstalk: < -100dB @ 1kHz

Analog Outputs

Connectors: Four 1/4" TRS balanced jacks standard, eight optional
Output Impedance: 100 ohms balanced, 50 ohms unbalanced
Maximum Output Level: +22dBu
Minimum Output Level(for 0dBFS): +4dBu
D/A Converter: 24-bit, 128x oversampling
Frequency Response: 20Hz - 20kHz +/- 0.15dB
Dynamic Range: > 110dB unweighted @ 1kHz
THD+N: < 0.002% @ 1kHz, +19dBu
Crosstalk: < -100dB @ 1kHz

Digital Audio I/O

Connectors: One female and one male XLR, standard
Impedance: 110 ohms (AES) or 75 ohms (SPDIF)
Formats: AES/EBU (AES3-1992) or SPDIF (IEC 60958-3)
Sample Rates / Sync:

48 or 44.1 kHz internal crystal (selectable)

syncs to AES/EBU, SPDIF, ADAT*, TDIF*, mLan*, BNC word clock*

(* requires optional I/O card)

Input Word Length: Up to 24 bits
Output Word Length: 16, 20, or 24 bits (selectable)
Dither: None, Flat, and 2 types of Shaped dither (selectable)

Factory ROM

Effect Algorithms: 249 (expandable)
Effect Presets: 636 (up to 999 user presets)
Effect Chains: 138 (up to 999 user chains)
Studios: 14 (up to 999 user studios)
Effects Algorithms: Reverbs (booths, rooms, chambers, halls, plates, stages and more), Delays, Choruses, Flangers, Phasers, Shapers, Enhancers, triggered Filters, Distortions, Tube Simulators, Compressors, Limiters, Expanders, Gates, Bit Resolution Degenerators, Aliasing, Ring Modulators, Cabinet Simulators, Spatializers, Rotary Speaker Emulations, Tremolo, Resonant Lowpass, Highpass Filters, Bandpass, Notch, Parametric, Graphic and Multi-band equalizers, Kurzweil's unique Laserverb, Pitcher and Chaos, plus others

External Data Storage

SmartMedia Drive: built in / support for cards up to 64Mb
MIDI Sys-Ex Dumps: Yes

Display and Metering

Display: 240 x 64 CCFL backlit LCD with front panel contrast
Meters: 4 point multi-stage, 8 channel metering (both graphical and numeric display options)


Ports: In/Out/Thru
Real-Time Control: Extensive realtime control/automation over nearly every effects & routing parameter
MIDI Clock Sync: Yes
Tap Tempo: Yes
Sys-Ex Dumps: Yes
Sys-Ex Control: Yes

Free OS Upgrades

via SmartMedia: Yes
via MIDI Sys-Ex Dump: Yes, via SMF

KSP8 Specifications

Height: (3.62 ") (9.20 cm)
Depth: (15.12") (38.40 cm)
Length: (17.12") (43.50 cm)
Weight: (13.23 lbs.) (6.00 kg)
Power: Universal switching, internal AC power supply



2017-11-21: #Kurzweil #ForteSE update 2.03 now available! https://t.co/RrJZN4XZTI https://t.co/AnNMgMYIDo

2017-11-20: Jim Alfredson demonstrating the Forte 7 with an original composition called "Mecha Funk". Featuring Kevin Depree (S… https://t.co/jK1NVqloDM

2017-11-16: RT @soundtechnology: New @KurzweilMusic SP6 88 note Stage Piano now shipping in the UK priced at just £949 inc VAT https://t.co/SKfGCisuYu…

2017-11-16: #Kurzweil #SP6 OS Update v1.04 Released: https://t.co/vdL2IKhW7A https://t.co/ockNEyzYDE

2017-11-14: Classic Keyboards YouTube channel demoing some #Kurzweil #Forte pianos - https://t.co/WpRJUJBByM

2017-11-13: The latest generation of #Kurzweil digital pianos, the CUP310 + CUP320, feat. our new High Definition Japanese and… https://t.co/BgULHV3Bus

2017-11-10: RT @lucadigennaro: Say cheese, @KurzweilMusic and @moogmusicinc (and the unknown noise-absorbing panels manufacturer too) https://t.co/RRv3…

2017-11-08: RT @Pro_Audio_Mag: @KurzweilMusic stellt mit dem SP6 ein neues Stage Piano vor: https://t.co/4qxHDpCjho https://t.co/kRh2UlanoQ

2017-11-07: RT @lucadigennaro: Look up to see a giant boy You've just become his brand new toy @KurzweilMusic #kurzweil #pc3k8 #keyboards #keyboard #mu…

2017-11-06: Own a #Kurzweil #Forte or #Forte SE? Want to be part of our beta tester community? email - forte_beta@ycrdi.com o… https://t.co/YxYWbfvaDI

2017-11-03: RT @LuiggySantiago: nice @KurzweilMusic PC3K8 with my #bigsky great keyboard and controller, great reverb experience!#tourlife #touringmusi…

2017-11-02: RT @AudreyBussanich: PC3K8. We go practically everywhere together. @KurzweilMusic @ArtistRelations https://t.co/UE7pqaYG2s

2017-11-01: Learn to use the #Kurzweil #SP6 controller knobs in this quick tip tutorial: https://t.co/hOzwxQaOb7

2017-10-31: #Kurzweil SP6 users - need to backup your custom data? https://t.co/02uYe7wUCN https://t.co/LKM5WVqjKk

2017-10-30: Very nice #Kurzweil #Forte demo video by Jim Alfredson @b3groover for https://t.co/AtkMT5H43S https://t.co/AeucErfmN0

2017-10-27: Read about the #Kurzweil #Forte 7 in @synthexpert https://t.co/k50a3bzVla https://t.co/UNfUnVmUeJ

2017-10-27: The @SynthExpo Brooklyn Synth Expo is this weekend! (10/28, 10/29) - https://t.co/PLZaJwQsoz come see what… https://t.co/hzSnHmiTuX

2017-10-26: #TBT A bit of history in a great story about the #Kurzweil VA-1 by Stephen Fortner https://t.co/jo1TJMhtNb https://t.co/0igG26h4yt

2017-10-25: #FatsDomino - RIP - we owe ya - https://t.co/9sCg3X8kNu

2017-10-25: Sam Smith on SiriusXM (2014) w/ #Kurzweil K26 (1999) 15yrs later still sounds great-the vocals aren't bad either ; ) https://t.co/H48c6zLxtz