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Kurzweil SP1 review

Kurzweil was once an industry leader, and while they are still very prominent, they maybe lack the mainstream coverage of some other brands. However, releases have focused on simplicity in recent years, with a great sound and simple workflow at the forefront.

This review looks at the 88-key SP1, an excellent example of the modern Kurzweil approach.

About the author

I’m a producer, composer, and multi-instrumentalist with over 20 years of experience in the music industry. As a professional pianist, I’ve played and tested everything from a Bösendorfer Imperial concert grand piano to budget-friendly beginner keyboards.

Kurzweil SP1 digital stage piano review
Image: Higher Hz
  • 88 weighted keys
  • 256-note polyphony
  • touch sensitivity
  • 16 voices
  • 1/4″ inputs, outputs
  • headphone jack

Final verdict on the Kurzweil SP1 4.5

The Kurzweil SP1 could be the ideal stage piano for performers who want fast access to high-quality sounds without paying a fortune. As good as the sounds are, the intuitive interface might be the star of the show. It’s a fantastic, no-fuss, uncomplicated keyboard and well worth its price tag.

What I like

  • Straightforward hands-on interface.
  • Great sounds.
  • Dedicated external MIDI gear section.
  • Up to four sounds simultaneously.
  • Great price.

What I don’t like

  • Keyboard feel could be slightly better.
Buy Kurzweil SP1 at: SweetwaterAmazon


Use these jump links to navigate to the desired section of the review.

Sound quality 4.5

The sound quality is very high, particularly with the acoustic piano voices, of which there are four. The acoustic piano sounds are fantastic, however, they are generally on the brighter side. That’s not necessarily bad, especially with the built-in EQ, but worth noting.

The available sounds cover just about everything you’d need for a typical pop/rock gig without additional gear. The included sounds range from electric pianos and pads to strings and woodwinds.

There are 16 sounds split across four categories: Pianos, Keyboards, Strings/Pads, and Other. The electric pianos are great and lend themselves well to ballads, funk, and 80s pop.

The number of sounds might seem disappointing when you consider that the SP6 has hundreds of voices. However, it also comes with a significant price increase.

Kurzweil’s SP1 has a max polyphony of 256 notes, which is outstanding by any standards.

Keyboard feel 4.5

The Kurzweil SP1 has 88 fully-weighted hammer-action keys. This keyboard has a few good and bad qualities. It’s not the most realistic piano feel that you’ll find on a stage piano. But it’s got enough weight to play with dynamics and expression, and it’s light enough for non-piano sounds.

Kurzweil SP1 keyboard feel
Image: Higher Hz

I would think of the SP1 keyboard as a bit of an all-rounder rather than an ultra-realistic piano feel.

Features 4.0

The Kurzweil SP1 stage piano doesn’t come with a long list of features. In fact, it has fewer than most, but everything it has to offer focuses on an intuitive workflow.

Built-in effects

The SP1 comes with some built-in effects, including reverb, chorus, tremolo, delay, and EQ. That might not sound like an impressively long list, but they work very well with the SP1 sounds.

The EQ is incredibly useful with the acoustic piano voices, especially in adding a little more depth to the low-end. The tremolo is lovely on the electric piano voices and the pads.

Keyboard modes

The SP1 offers various keyboard modes, including Split, Layer, Layer/Split, and Dual.

One of the best things about the SP1 is that you can split up to four voices across the keyboard simultaneously. Having the option to utilize four keyboard zones on stage allows performers to play multiple keyboard parts with a single instrument.

Dual mode also allows you to create two identical zones for duets or student/teacher practice.

Dedicated external control section

If you feel like you need more than the SP1 has to offer, it won’t complicate your workflow.

A dedicated control section for external MIDI means you can maintain the same speedy, hand-on control, even if you expand your setup.

Pitch and mod wheels

As the SP1 is a fully-fledged performance instrument, you might expect it to have pitch bend and modulation wheels. They add so much expression to your performance. But, not all keyboard pianos in the same price range have them, so it’s definitely a lovely addition.

In use 4.8

The SP1 has an incredibly intuitive interface, and in my opinion, it’s where it comes into its own. Many stage pianos fail because the number of multi-function buttons and amount of tedious menu-diving make them insufferable to use. With the SP1, everything has dedicated sections and buttons.

Kurzweil SP1 interface closeup
Image: Higher Hz

Each sound category has a dedicated volume knob, which makes it easy to arrange split or layered sounds. Whether changing your sound, layering it, splitting it, or adding effects, you are rarely more than a single button away from the right result.

The intuitive workflow and the price (under $1000) should make the Kurzweil SP1 an attractive stage piano for any active performer.

Build quality 4.4

Kurzweil keyboards are traditionally quite bulky, which is both good and bad. On the one hand, they could feel quite clumsy moving around, but on the other hand, they feel incredibly robust (which is great for life on the road).

Kurzweil SP1 build quality
Image: Higher Hz

The SP1 is perhaps somewhere in the middle. It’s lighter than many older models, making it easier in transit for performers. But it’s not the slimmest keyboard piano either, so it maintains a bit of that classic Kurzweil style.

More importantly, it should easily withstand the life of a working musician. Even the buttons and knobs feel like they are designed for utility over style. Having said that, it’s not a bad-looking instrument; it has a somewhat retro image that I like.

Connectivity 4.5

Surprisingly, the SP1 has more connectivity options than the more expensive SP6. There are two USB ports (type A/B), two 1/4-inch audio inputs, and two 1/4-inch audio outputs.

Kurzweil SP1 connectivity
Image: Higher Hz

The SP1 only has one headphone output; two would be nice, but to be fair, it’s a performance keyboard more than it is a student/teacher practice piano.

Compared to other stage pianos

In my opinion, the SP1 is a solid choice in most scenarios and one of the best keyboard pianos under $1000 right now. But, I always like to give you more options to consider.

Kurzweil SP1 vs Yamaha P-125

I have previously scored the P-125 higher than the SP1, and it’s still a fantastic keyboard. However, I feel that the competition has somewhat overtaken it since its release.

Read the full Yamaha P-125 review

Kurzweil SP1 vs Roland FP-30X

The Roland FP-30X is an easy-to-use, reliable stage piano with some great sounds. I prefer most things about the SP1, but the Roland may have a better keyboard feel.

Read the full Roland FP-30X review

Kurzweil SP1 vs Korg XE20

The Korg XE20 is a fascinating instrument and offers more versatility than most in its class. It also has built-in speakers, which could encourage many users.

Read the full Korg XE20 review

Who is the Kurzweil SP1 best suited for?

The SP1 is the perfect keyboard for performers who want a professional but straightforward setup without spending thousands of dollars.

Buy Kurzweil SP1 at: SweetwaterAmazon