# Pro-Ject: Replacement Power Supply for Phono Box, Speed Box, Head Box 18V / 500mA DC (ND-025) — resale value

Source: JunkPal price guide — https://junkpal.ai/products/pro-ject-replacement-power-supply-for-phono-box-speed-box-head-box-18v-b079ntng54

**Pro-Ject: Replacement Power Supply for Phono Box, Speed Box, Head Box 18V / 500mA DC (ND-025)** sells for about **$32.99** new or sealed, based on real closed eBay sales.

Live listings and the full sold-price history are on the page: https://junkpal.ai/products/pro-ject-replacement-power-supply-for-phono-box-speed-box-head-box-18v-b079ntng54

## Value

| Condition | Value (USD) |
| --- | --- |
| New / Sealed | $32.99 |

Values are medians of real closed eBay sales, updated 2026-07-16. They are estimates for reference, not offers or appraisals — condition, completeness and edition move them a lot, so compare against the sold listings before pricing anything.

## Check the market

- [Sold listings on eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DPro-Ject%2520replacement%2520power%2520supply%2520ND-025%26LH_Sold%3D1%26LH_Complete%3D1%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-sold&p=md-sold) — the closed sales these medians are computed from
- [Live listings on eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DPro-Ject%2520replacement%2520power%2520supply%2520ND-025%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-live&p=md-live) — what sellers are asking right now

eBay links are affiliate links: JunkPal may earn a commission at no cost to you.

## Details

| Field | Value |
| --- | --- |
| Brand | Pro-Ject |
| Category | All Electronics |

## About

This is the Pro-Ject Replacement Power Supply, model ND-025. It is designed to power Pro-Ject Phono Boxes, Speed Boxes, and Head Boxes, providing 18V / 500mA DC.

This component is sought after by owners of Pro-Ject turntables and related audio equipment who require a direct replacement for their original power supply.

The resale value is driven by the item's functional condition and its status as an original replacement part for specific Pro-Ject models.

## FAQ

**What devices does the ND-025 power?**

The Pro-Ject ND-025 is designed to be a replacement power supply for Pro-Ject Phono Boxes, Speed Boxes, and Head Boxes.

**What are the electrical specifications of this power supply?**

This unit provides 18V / 500mA DC.

**What factors affect the resale value of this part?**

The resale value is determined by the item's condition and its completeness as a replacement component.

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Full price guide: https://junkpal.ai/products/pro-ject-replacement-power-supply-for-phono-box-speed-box-head-box-18v-b079ntng54
How these values are computed: https://junkpal.ai/methodology
Cite as: "JunkPal price guide value as of 2026-07-16, based on real sold listings (junkpal.ai)"