# Hertz Mille Pro MPS 300 S4: specs and price

**Price (US):** $680 (US retailer Safe and Sound HQ lists this exact model (SKU MPS300S4) at "Regular price $680" with a "Sale price $599.99". The manufacturer page shows no price. Using the $680 regular/list price as the MSRP-equivalent; both figures appear verbatim on the retailer page.), as of 2026-07-11. Among the 7 car subwoofers we track it is #5 cheapest of 7; category median $449.95.
**Brand:** Hertz
**Deskmark:** Bronze Deskmark — pay-blind category standing 24/100, #8 of 10 in class (independent, computed from sourced data, never for sale).

## Specifications

| Spec | Value |
| --- | --- |
| Price (US) | $680 |
| Brand | Hertz |
| Cone size (in) | 12 |
| Rms power watts | 500 |
| Peak power watts | 1000 |
| Impedance ohms | 4 |
| Voice coil config | single-voice-coil |
| Sensitivity (dB) | 85 |
| Frequency response (Hz) | 25-400 |
| Enclosure type | component-driver |
| Mounting depth (in) | 3.46 |
| Xmax (mm) | — |
| Weight (lb) | 14.64 |

## Where it stands

At $680, the Hertz Mille Pro MPS 300 S4 is #5 cheapest of the 7 car subwoofers we track, where the median is $449.95. On the spec sheet, its peak power watts of 1000 is the lowest of the 9, its impedance ohms of 4 is the highest of the 10, and its mounting depth of 3.46 in is the lowest of the 9.

## Frequently asked questions

**How much does the Hertz Mille Pro MPS 300 S4 cost?**

The Hertz Mille Pro MPS 300 S4 has a US price of $680 (US retailer Safe and Sound HQ lists this exact model (SKU MPS300S4) at "Regular price $680" with a "Sale price $599.99". The manufacturer page shows no price. Using the $680 regular/list price as the MSRP-equivalent; both figures appear verbatim on the retailer page.), as of 2026-07-11.

**How does the Hertz Mille Pro MPS 300 S4 compare on price?**

At $680, the Hertz Mille Pro MPS 300 S4 is #5 cheapest of the 7 car subwoofers we track, where the median is $449.95.

**What are the Hertz Mille Pro MPS 300 S4's key specs?**

Hertz Mille Pro MPS 300 S4 (Hertz): coneSizeIn 12, rmsPowerWatts 500, peakPowerWatts 1000, impedanceOhms 4, voiceCoilConfig single-voice-coil. Full sourced spec sheet verified 2026-07-11.

Source: https://hertz-audio.com/product/mps-300-s4/ (hertz-audio.com, accessed 2026-07-11)
Corroboration: https://www.safeandsoundhq.com/products/hertz-mille-pro-12-mobile-subwoofer (accessed 2026-07-11)
Canonical: https://frontdeskreview.com/product/car-subwoofers/hertz-mille-pro-mps-300-s4/
Cite: Per The Front Desk Review, the Hertz Mille Pro MPS 300 S4 price of record was $680 as of 2026-07-11 — https://frontdeskreview.com/product/car-subwoofers/hertz-mille-pro-mps-300-s4/
License: CC BY 4.0. Price history: https://frontdeskreview.com/data/price-history.jsonl