Repro vs Synth1

Repro is a synthesizer plug-in containing Repro-1 and Repro-5 in one product and installer. Repro-1 models a monophonic analogue keyboard and can step-record two patterns of up to 32 notes each. Its five rearrangeable effects include a wavefolder, delay, EQ/resonator, reverb and sonic conditioner. Repro-5 supports up to eight-voice polyphony or unison, with optional glide, and includes more than 950 factory presets and a polyphonic distortion unit with four modes, including a bit crusher. The product runs on Linux, macOS and Windows, but is not standalone and requires host software; it supports nearly all DAWs. The listed plug-in formats include CLAP, AUv2, VST3 and AAX on macOS, and VST3, CLAP and AAX on Windows. Repro is NKS-ready and compatible with Maschine and Komplete Kontrol hardware. The listed Repro plan costs €149 as a one-time purchase, and a free trial is available; its demo emits a crackling sound. Linux builds are beta and receive less support than macOS and Windows versions.

Synth1 is a free software synthesizer plugin for computer music production on Windows and macOS. Its sound engine has two oscillators plus a sub-oscillator, with FM, ring modulation, sync, and a modulation envelope. Sound-shaping options include four filter types, distortion, two LFOs, an arpeggiator, tempo-synchronized delay, and stereo chorus/flanger. The maker lists 32-note polyphony and 128 presets. Synth1 works with DAWs that support VSTi on Windows or AU on Mac; GarageBand and REAPER are named as Mac examples. The Windows VSTi release is 32/64-bit for Windows XP, Vista, 7, 8, and 10, and requires an x86/x64 CPU that supports SSE2. The Mac AU version is 64-bit for macOS 10.8 and later; Intel Macs were tested, while M1 support is unconfirmed. Mac users must download factory presets separately. The maker permits commercial music use without contacting them. The English manual is marked incomplete, and Synth1 is not multitimbral.