8.2Great
OB-Xd is a virtual analog synth plugin from discoDSP. Score 8.2/10, price Free / paid, formats and comparisons.
Plugin comparison
OB-Xd vs Currents & Nostalgia
Specs, price and the Dubspot Score, side by side — with our verdict on which synth to buy.
Independent score / workflow fit / buying signal
Contenders
The side-by-side
Currents & Nostalgia is Unusable Engineering's six-voice virtual-analog synth with two slot sequencers, per-voice drift, and no modulation matrix.
Technical matrix
Specs compared
| Signal | OB-Xd | Currents & Nostalgia |
|---|---|---|
| Price | Free / paid | €89 |
| Dubspot Score | 8.2 | — |
| Formats | VST3, AU, AAX | VST3, AU |
| Product type | synth from discoDSP | — |
| Developer | discoDSP | Unusable Engineering ApS (Rasmus Nyåker) |
| Typical price | Free / paid | — |
| Formats | VST3, AU, AAX | VST3, AU (macOS and Windows) |
| Primary job | focused synth work in modern sessions | — |
| Catalog status | Current as of 2026 | — |
| Voices | — | 6 |
| Oscillators | — | 2 circuit-modeled (saw, triangle, sine, pulse) plus Ring Mod, Folded Sum, Sine and Saw Min/Max |
| Movement | — | Two independent slot systems (oscillators and filter) with sequenced positions and blends |
| Per-voice drift | — | Discrepancies section (tune, scale, wave mix, position, filter, envelopes, stereo, Dice) |
| Filter | — | Low-pass and high-pass with resonance |
| Envelopes | — | 2 (amplitude and modulation), attack/decay/release |
| Presets | — | 350 factory presets |
| Price | — | €89 incl. VAT (€71.20 excl. VAT); 30-day refund |
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