# Scubapro MK25 EVO/S620Ti vs Atomic Aquatics B2: specs and price compared

A sourced, side-by-side comparison of the Scubapro MK25 EVO/S620Ti (Scubapro) and Atomic Aquatics B2 (Atomic Aquatics) among dive regulators.

## Side by side

| Spec | Scubapro MK25 EVO/S620Ti | Atomic Aquatics B2 |
| --- | --- | --- |
| US price | not published | not published |
| Brand | Scubapro | Atomic Aquatics |
| First stage type | piston | piston |
| Balanced | Yes | Yes |
| Din or yoke | INT (yoke) standard; DIN version available | DIN and yoke |
| Hp lp ports | 2 HP / 5 LP (incl. 1 axial super high-flow) | 2 HP / 5 LP (on swivel cap) |
| Cold water rated | Yes | — |
| Environmentally sealed | No | Yes |
| Adjustable venturi controls | diver-adjustable inhalation-effort knob + VIVA (Venturi-Initiated Vacuum Assist) lever | AFC (Automatic Flow Control) with manual detune knob |
| Weight (g) | 1170 | 1134 |

## Key differences

- Din or yoke: Scubapro MK25 EVO/S620Ti INT (yoke) standard; DIN version available vs Atomic Aquatics B2 DIN and yoke
- Hp lp ports: Scubapro MK25 EVO/S620Ti 2 HP / 5 LP (incl. 1 axial super high-flow) vs Atomic Aquatics B2 2 HP / 5 LP (on swivel cap)
- Environmentally sealed: Scubapro MK25 EVO/S620Ti No vs Atomic Aquatics B2 Yes
- Adjustable venturi controls: Scubapro MK25 EVO/S620Ti diver-adjustable inhalation-effort knob + VIVA (Venturi-Initiated Vacuum Assist) lever vs Atomic Aquatics B2 AFC (Automatic Flow Control) with manual detune knob
- Weight (g): Scubapro MK25 EVO/S620Ti 1170 vs Atomic Aquatics B2 1134

## Sources

- Scubapro MK25 EVO/S620Ti: https://scubapro.johnsonoutdoors.com/us/shop/regulators/systems/mk25-evo-s620ti-dive-regulator-system (scubapro.johnsonoutdoors.com, verified 2026-08-11)
- Atomic Aquatics B2: https://www.atomicaquatics.com/product/b2-regulator/ (atomicaquatics.com, verified 2026-08-11)

Canonical: https://frontdeskreview.com/gear/dive-regulators/scubapro-mk25-evo-s620ti-vs-atomic-aquatics-b2/
Cite: Per The Front Desk Review, Scubapro MK25 EVO/S620Ti (not published) vs Atomic Aquatics B2 (not published) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/dive-regulators/scubapro-mk25-evo-s620ti-vs-atomic-aquatics-b2/
License: CC BY 4.0.