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Message: [QUOTE="Bombastus, post: 91746, member: 2178"] A MIDI keyboard sends performance data to another sound source, while a hardware synthesizer can generate playable audio inside the instrument itself. Both may have piano-style keys, knobs, USB sockets, and MIDI ports, which is why the difference gets muddy once you move beyond entry-level gear. The categories also overlap more than product labels suggest. Many synthesizers can transmit note data to a DAW and control software instruments, while some send their own audio over USB as well. Knowing [B][URL='https://goldmidi.com/community/resources/what-is-a-midi-keyboard.76/']how a MIDI keyboard controls software instruments[/URL][/B] makes the comparison much easier because the controller and the sound source stop looking like the same job. [HEADING=2]The sound engine changes what you actually record[/HEADING] A dedicated MIDI keyboard normally needs a computer, sound module, phone, tablet, or other instrument to turn its messages into sound. Press middle C and the controller reports the performance, but the connected instrument decides whether you hear a piano, bass, pad, or something stranger. Changing the virtual instrument later can completely change the result without replaying the notes. A hardware synthesizer already contains a sound engine. Its keys can trigger that engine directly, and its audio outputs carry the resulting sound to speakers, headphones, an audio interface, or another recorder. Recording only its MIDI output does not capture the actual synth patch because MIDI stores performance instructions rather than the finished waveform. This distinction matters once you start arranging. A MIDI track can preserve notes, timing, velocity, pitch bend, and other supported messages so you can edit the performance before sending it back to the synth. An audio track captures what the synthesizer sounded like at record time, including the patch, filter position, effects, and any movements that reached the audio output. Recording both can be useful. Keep the MIDI performance for editing and capture the hardware output when the sound is ready. [B][URL='https://www.nature.com/articles/s41598-025-17410-6']MIDI performance data stays separate from rendered audio[/URL][/B], which is why changing notes on a MIDI track is fundamentally different from cutting up a recorded synth waveform. [HEADING=2]A synthesizer can also work as a MIDI controller[/HEADING] A hardware synth with MIDI OUT or suitable USB MIDI can often play software instruments just like a controller keyboard. The keybed sends note messages to the computer while the internal sound engine remains available for its own parts. You might use the same keyboard for a hardware bass patch in one track and a software piano in another. The details matter more than the presence of a USB socket. Some front-panel controls transmit standard MIDI CC messages that software can map easily, while others mainly edit parameters inside the synth and send little or nothing useful to the DAW. A dedicated controller may offer tighter transport, mixer, plug-in, pad, and display integration because controlling software is its main purpose. Local Control can also catch people out. On many synthesizers, a key normally talks directly to the internal sound engine. If the DAW receives the same note and immediately sends it back, the synth can be triggered twice, so producers often change Local Control or monitoring behavior when using the DAW as the center of the MIDI route. USB does not always mean MIDI only. Some modern synthesizers include built-in USB audio interfaces, allowing one cable to carry MIDI in both directions and digital audio back to the computer. Other models still require their analog outputs to be connected to an audio interface for recording, so checking the exact USB audio specification saves a pointless cable hunt later. [HEADING=2]The better choice follows your actual signal path[/HEADING] A MIDI keyboard makes more sense when most of your sounds already live inside the computer. You can put more of the budget and desk space toward the keybed, pads, faders, transport controls, or plug-in integration instead of buying another sound engine. Switching between a sampled piano, orchestral library, drum rack, and software synth then happens without changing the physical keyboard. A synthesizer earns its place when you want its own sound engine, hands-on patch design, or a playable instrument that does not depend on a computer. It can still join a DAW setup, and a capable model may replace a separate controller for plenty of sessions. Buying one only to control software, though, can leave you paying for synthesis hardware you rarely hear. The most flexible studio route is often less tidy on paper but better in practice. Use MIDI to keep the performance editable, route those notes back to the hardware when needed, and record the synth's audio on a separate track once the patch is doing something worth keeping. The two recordings serve different jobs, and neither makes the other redundant. [/QUOTE]

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