When the SF2 hit the market, it was competing directly with:
Where the SF2 won: Portability and the "one-stop-shop" approach. You could bring one keyboard to a gig, sample a crowd noise or a backing vocal, and play your sequences all from one unit.
Where the SF2 failed: The lack of aftertouch, the cheap plastic keys, and the mono-only sampling made professional producers look toward Akai (the MPC2000) or Ensoniq.
Buy the Korg SF2 if:
Avoid the Korg SF2 if:
The SF2 houses a digital effects processor with 47 algorithms, including reverbs, delays, choruses, and distortion. It is a multi-effect system (requiring you to assign one effect to a timbre).
The onboard sequencer is 8-track, with a maximum capacity of 10,000 notes. It is primitive compared to the Korg M1’s sequencer or the Akai MPC series, but functional for sketching ideas or playing simple backing tracks in a live setting. korg sf2
A SoundFont (.sf2) is a file format that contains audio samples, instrument definitions, and mapping information. It is one of the most universal formats for sharing sampled instruments because it is open and widely supported by software samplers (like Sfz players) and DAWs.
This is the primary differentiator. The Korg SF2 includes 2MB of non-volatile RAM for sampling (expandable to 10MB via a proprietary SIMM expansion card). You could sample via the RCA inputs at 16-bit resolution with variable sample rates (ranging from 48 kHz down to 12.5 kHz for longer recording times).
Limitations to note: The SF2 cannot sample in stereo. It is strictly mono sampling. Furthermore, you cannot "resample" the internal synth engine. To get a sound into the sampler, you had to pipe external audio into the RCA jacks. Once sampled, you could assign that waveform to a key, map it across the keyboard, and apply the onboard effects. When the SF2 hit the market, it was competing directly with:
The 61-key action uses rubber contact strips. Over time, the carbon pads wear out, leading to "dead keys" or velocity insensitivity. Replacement strips are still available from third-party suppliers.
The Korg SF2 is a 61-key velocity-sensitive synthesizer. It is not weighted, but the keys are pleasantly firm—a hallmark of Korg’s better synth-action keybeds from that era. The chassis is a dark, battleship gray plastic that feels industrial rather than cheap.
Connectivity (Surprisingly robust for 1998): Where the SF2 won: Portability and the "one-stop-shop"
The Display: One of the most beloved features of the SF2 is the backlit 40-character x 2-line LCD. While modern players wince at the lack of a color touchscreen, veterans know that Korg perfected the "menu-diving" interface here. The layout is logical, with dedicated buttons for Mode (Program, Combination, Song, Global), Effects, Edit, and Compare.
Unlike the Triton’s touchscreen, the SF2 forces you to learn synthesis parameters by muscle memory—a trait many modern purists now romanticize.