---
product_id: 92006590
title: "PROCOOL HK640B-RM40 / 1U Rack Mount Intake LED Fan Designed for Hughes & Kettner Grandmeister and Tubemeister Guitar Amps - Includes RM-40 Rack Mounts for The Grandmeister"
brand: "procool"
price: "NT$7268"
currency: TWD
in_stock: true
reviews_count: 1
url: https://www.desertcart.tw/products/92006590-procool-hk640b-rm40-1u-rack-mount-intake-led-fan-designed
store_origin: TW
region: Taiwan
---

# 31 CFM airflow 20 dBA ultra-quiet 6 blue LED fans PROCOOL HK640B-RM40 / 1U Rack Mount Intake LED Fan Designed for Hughes & Kettner Grandmeister and Tubemeister Guitar Amps - Includes RM-40 Rack Mounts for The Grandmeister

**Brand:** procool
**Price:** NT$7268
**Availability:** ✅ In Stock

## Summary

> 💨 Cool your tone, not your vibe.

## Quick Answers

- **What is this?** PROCOOL HK640B-RM40 / 1U Rack Mount Intake LED Fan Designed for Hughes & Kettner Grandmeister and Tubemeister Guitar Amps - Includes RM-40 Rack Mounts for The Grandmeister by procool
- **How much does it cost?** NT$7268 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/92006590-procool-hk640b-rm40-1u-rack-mount-intake-led-fan-designed)

## Best For

- procool enthusiasts

## Why This Product

- Trusted procool brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Sleek LED Ambiance:** Equipped with 6 vibrant blue LED fans that add a modern, professional aesthetic to your rack setup.
- • **Space-Smart Design:** Compact 1U rack space footprint maximizes your gear real estate without compromising performance.
- • **Tailored Fit for Pros:** Specifically designed for Hughes & Kettner Grandmeister and Tubemeister amps with included RM-40 rack mounts for seamless integration.
- • **Precision Cooling Power:** Delivers a robust 31 CFM intake airflow to keep your Hughes & Kettner amps running cool under pressure.
- • **Whisper-Quiet Operation:** Operates at a barely-there 20 dBA noise level, so your sound stays pure and uninterrupted.

## Overview

The PROCOOL HK640B-RM40 is a 1U rack mount intake fan engineered exclusively for Hughes & Kettner Grandmeister and Tubemeister guitar amps. Featuring 6 blue LED fans, it delivers a powerful 31 CFM airflow at an ultra-quiet 20 dBA noise level. Its sleek black design includes RM-40 mounts for easy installation, ensuring your amps stay cool and performing at their best in any professional setup.

## Description

Buy PROCOOL HK640B-RM40 / 1U Rack Mount Intake LED Fan Designed for Hughes & Kettner Grandmeister and Tubemeister Guitar Amps - Includes RM-40 Rack Mounts for The Grandmeister: Rack Accessories - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Amazing!! - Works amazing just like it should!

## Features

- For Hughes & Kettner Tubemeister and Grandmeister rack mount amps
- 1U One rack space Fan and (4U) Four rack space mounts for Grandmeister | 6 Blue LED Quiet fans
- Airflow = 31 CFM (INTAKE) Noise = 20 dBA

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07HR3PYSS |
| Color Name | Black |
| Compatible Devices | Guitar |
| Connector Type | 6.35mm Jack |
| Customer Reviews | 5.0 5.0 out of 5 stars (7) |
| Date First Available | September 27, 2018 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 2.4 pounds |
| Item model number | HK640B-RM40 |
| Output Wattage | 4.5 Watts |
| Power Source | Corded Electric |
| Product Dimensions | 19 x 1.5 x 1.75 inches |

## Product Details

- **Brand:** PROCOOL
- **Color:** Black
- **Compatible Devices:** Guitar
- **Output Wattage:** 4.5 Watts
- **Product Dimensions:** 1.75"D x 19"W x 1.5"H

## Images

![PROCOOL HK640B-RM40 / 1U Rack Mount Intake LED Fan Designed for Hughes & Kettner Grandmeister and Tubemeister Guitar Amps - Includes RM-40 Rack Mounts for The Grandmeister - Image 1](https://m.media-amazon.com/images/I/61CG8JPkhhL.jpg)
![PROCOOL HK640B-RM40 / 1U Rack Mount Intake LED Fan Designed for Hughes & Kettner Grandmeister and Tubemeister Guitar Amps - Includes RM-40 Rack Mounts for The Grandmeister - Image 2](https://m.media-amazon.com/images/I/51Xd+-Cx6LL.jpg)
![PROCOOL HK640B-RM40 / 1U Rack Mount Intake LED Fan Designed for Hughes & Kettner Grandmeister and Tubemeister Guitar Amps - Includes RM-40 Rack Mounts for The Grandmeister - Image 3](https://m.media-amazon.com/images/I/41gdxVNJyAL.jpg)
![PROCOOL HK640B-RM40 / 1U Rack Mount Intake LED Fan Designed for Hughes & Kettner Grandmeister and Tubemeister Guitar Amps - Includes RM-40 Rack Mounts for The Grandmeister - Image 4](https://m.media-amazon.com/images/I/71n5bd-MIYL.jpg)
![PROCOOL HK640B-RM40 / 1U Rack Mount Intake LED Fan Designed for Hughes & Kettner Grandmeister and Tubemeister Guitar Amps - Includes RM-40 Rack Mounts for The Grandmeister - Image 5](https://m.media-amazon.com/images/I/6156TP6yyhL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Amazing!!
*by B***T on May 4, 2019*

Works amazing just like it should!

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**Shop now:** [https://www.desertcart.tw/products/92006590-procool-hk640b-rm40-1u-rack-mount-intake-led-fan-designed](https://www.desertcart.tw/products/92006590-procool-hk640b-rm40-1u-rack-mount-intake-led-fan-designed)

---

*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-03-18*