Learn

BassFlex vs MODO BASS 2

MODO BASS 2 and BassFlex are close cousins: both are modeled, so neither plays recordings. MODO BASS 2 is IK Multimedia's: 22 modeled basses and more than 1,500 MIDI bass patterns, on Windows and Mac, for $199.99. BassFlex is modeled, not sampled, with presets for electric, acoustic and upright basses, a 24.3 MB download and a price of $79.

What they have in common

Modeled. Each note is computed as it is played, from the string, the pickup and the body.
Windows 10 and 11, as a standalone program and as a plugin.
Electric and upright basses in one instrument, with an amp and effects to shape the result.
A free way in. IK offers its free MODO BASS 2 CS edition. BassFlex has a demo you can download and try before you buy.

Where MODO BASS 2 stands out

Mac as well as Windows, with AU, VST2, VST3 and AAX plugins on Mac.
More basses. 22 modeled basses, including fretless and double-bass models, and a 4-string can be turned into a 5- or 6-string.
MIDI bass patterns. More than 1,500 of them. BassFlex has no patterns of its own: its parts come from ComposerFlex, a MIDI file or your playing.
Playing style, hand position and string setup, with algorithms for pick and slap, and 32 pickup models.
Effects and amps: 7 bass stomp effects and 2 bass amps.
Double basses with movable microphones and a piezo signal.

Where BassFlex stands out

$79, against $199.99 for MODO BASS 2.
No special driver. IK lists an ASIO compatible sound card as required on Windows for MODO BASS 2. BassFlex uses Windows' own sound, with no special driver.
No account and no online activation. A license key and your email address, entered once for each Windows user on each computer, and one license for one person, to use on all of their own computers. IK uses registration and authorization.
It never connects to the internet.
A stated size. BassFlex is a 24.3 MB download that installs at 50.6 MB. IK states no size for the full MODO BASS 2.
Four slots (A to D) to switch between sounds or layer them, with Compare, Vary and Randomize.
Your song to a file. It renders a MIDI file to FLAC, or to WAV with the included command-line renderer.
Built to play ComposerFlex's songs, our songwriting program, on the same PC with no setup.

Which to pick

On a Mac: MODO BASS 2.
For the largest set of modeled basses, or ready-made MIDI bass patterns: MODO BASS 2.
On Windows, at $79, with no special sound driver: BassFlex.
If you'd rather have no account, no online activation and one license for one person, to use on all of their own computers: BassFlex.

Owning both

Both are modeled, but they differ in price and in what comes built in, so they can share one PC. Try them with your own MIDI: IK's free MODO BASS 2 CS edition is on ikmultimedia.com, and BassFlex's demo is here. This page doesn't compare how they sound. That's for your ears.

The facts side by side

Every fact about MODO BASS 2 is from IK Multimedia's own pages, checked on 7 November 2026. Prices are list prices in US dollars; sales come and go.

	BassFlex	MODO BASS 2
How it makes its sound	Modeled. It computes every note as you play, from the physics of plucked strings: the upright and acoustic basses sound through the body, and the electric basses through a pickup, some of them with a bass amp and cabinet. It plays no recordings.	Modeled: real-time modal synthesis, which the maker says models how a player, strings, fretboard, body, pickups and electronics interact. Not sampled.
Price	$79, one-time	$199.99 (excl. tax) for all 22 basses; SE edition (4 basses) $99.99; extra bass models $49.99 each; CS edition free
Download and disk space	24.3 MB download, 50.6 MB installed	Not stated on the maker's pages for the full version; the SE edition lists 800 MB of disk space
Memory the maker asks for	4 GB, with 4 cores or more and 100 MB of disk (the minimum we state for every Flex program)	4 GB of RAM (8 GB suggested)
Runs on	Windows 10 and 11, 64-bit	Windows 10 or later, and "an ASIO compatible sound card" is required; macOS 10.13 or later (Apple M1 native)
Forms	Standalone and VST3	Standalone and 64-bit plugin: VST2, VST3 and AAX on Windows; AU, VST2, VST3 and AAX on Mac
Needs another program	Nothing else	Nothing else. On Windows, an ASIO compatible sound card
Copy protection	A license key and your email address, entered once for each Windows user on each computer. No account and no online activation.	IK registration and authorization (its Authorization Manager, with a serial number)
Computers per license	One license for one person, to use on all of their own computers	The maker's pages disagree (3 or 5 devices); check before you buy
Demo	A demo to download and try before you buy	No trial on the product page; the free MODO BASS 2 CS edition is offered
Basses included	Presets for electric bass, acoustic bass guitar and upright bass; four slots to layer sounds	22 basses (electric, fretless and double-bass models), more than 1,500 MIDI bass patterns, 32 pickup models, 7 bass stomp effects and 2 bass amps

More: virtual basses compared: modeled and sampled, a table of 15 products, and all about BassFlex.

If something here is out of date, write to [email protected] and we'll correct it.

Sources