---
product_id: 580463007
title: "[Upgraded] VFD Audio Spectrum Analyzer Bluetooth 5.0 Receiver 3.5mm AUX Selector (Black)"
brand: "douk audio"
price: "€ 147.02"
currency: EUR
in_stock: true
reviews_count: 11
category: "Douk Audio"
url: https://www.desertcart.it/products/580463007-upgraded-vfd-audio-spectrum-analyzer-bluetooth-5-0-receiver-3
store_origin: IT
region: Italy
---

# ±3ppm ultra-precise RX8025T clock 25×15 high-res VFD display Bluetooth 5.0 + 2× 3.5mm AUX inputs [Upgraded] VFD Audio Spectrum Analyzer Bluetooth 5.0 Receiver 3.5mm AUX Selector (Black)

**Brand:** douk audio
**Price:** € 147.02
**Availability:** ✅ In Stock

## Summary

> 🎵 Elevate your audio game with precision and style—don’t just listen, visualize!

## Quick Answers

- **What is this?** [Upgraded] VFD Audio Spectrum Analyzer Bluetooth 5.0 Receiver 3.5mm AUX Selector (Black) by douk audio
- **How much does it cost?** € 147.02 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/580463007-upgraded-vfd-audio-spectrum-analyzer-bluetooth-5-0-receiver-3)

## Best For

- douk audio enthusiasts

## Why This Product

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

## Key Features

- • **Seamless Multi-Source Audio Hub:** Bluetooth 5.0 plus dual AUX inputs let you effortlessly switch between devices—your desk’s new command center.
- • **Visualize Your Sound Like a Pro:** High-res VFD screen delivers crystal-clear frequency band accuracy for that perfect audio insight.
- • **Precision Timekeeping Meets Style:** Built-in crystal oscillator keeps time with near-perfect accuracy, blending tech and aesthetics flawlessly.
- • **Compact, Durable, and Eye-Catching:** CNC-machined aluminum and acrylic case offers sleek, space-saving design that elevates any professional setup.
- • **Customizable Display for Your Vibe:** Adjust brightness, gain, and peak hold with remote control—tailor your spectrum analyzer to match your mood and space.

## Overview

The [Upgraded] VFD Audio Spectrum Analyzer Bluetooth 5.0 Receiver combines a high-resolution 25×15 green VFD display with Bluetooth 5.0 and dual 3.5mm AUX inputs, enabling versatile audio source management. Featuring a built-in RX8025T crystal oscillator, it offers ultra-precise clock accuracy (±3ppm). Users can customize display modes, brightness, gain, and peak settings via remote control. Its compact CNC-machined aluminum and acrylic design fits seamlessly into professional or home audio setups, making it a stylish and functional centerpiece for real-time audio visualization and clock display.

## Description

Warm Tips: 1. 3.5mm AUX1 and 3.5mm AUX2 cannot input at the same time, only one audio source channel (MIC / Bluetooth / IN1 / IN2) can input at a time. Parameters: Display screen: VFD (Vacuum Fluorescent Display) Resolution: 25 × 15 Frequency range supported: 80Hz-16KHz Display item: music spectrum / clock Audio signal input: MIC / Bluetooth 5.0 / 2 groups of 3.5mm AUX Audio signal output: 1 group of 3.5mm AUX Work mode: 1. Auto mode (display music spectrum when music input, display clock mode when no music input) 2. Clock display mode (always) Clock display: 2 kinds Music spectrum display: 5 kinds Music display mode: AGC+customized output curve (Real output / Smooth output) Adjustable items: main light column falling speed / peak holding time / peak falling speed Brightness adjustment: 5 levels+auto adjustment Gain adjustment: 5 levels Power-off memory function: support Remote control: support Working voltage: DC 5V Dimensions (W*D*H): 184*75*66mm / 7.24*2.95*2.60in Net weight: 322g / 0.71lb Package weight: 500g / 1.10lb Packing List: 1× VFD253 Audio Spectrum 1× USB Cable (Type-C) 1× Remote Control 2× Pad (stick to the bottom) 1× User Manual

Review: ITEM FAILED AND NO RESPONSE FROM THE COMPANY. - Just like one of the reviewers who shared a video, this thing is great. He is right in saying the MIC alone function is horrible. Since I use my BT from my PC to send audio to my receiver, all I had to do was get a rca adapter to 1.5m stereo out to IN 1 or 2 of the spectrum analyzer. I plugged the rca side into my zone 2 pre out and the other end into the spectrum analyzer. then turn up the volume on zone 2 since most don't utilize zone 2. it works great. be sure when you receive this, it has the remote as it does simplify things when setting up. ****update**** 2-27-2025 the product is now failed and no longer powers on. I've tried to reach the company with no response. save your money and do not purchase this item. there is no product support. ****update*** 3-9-2025 after many days of no response I added the number on their web page to WhatsApp and reached out. Someone after a couple days responded but by this time I managed to get desertcart to refund the item and send the failed one back despite they charging me for a damaged item? Makes no sense. This company just sent out a replacement with out charging me. I appreciate their help and kindness to send a new one. I adjusted my review to 5 stars because they deserve it despite the initial no to slow response.
Review: Looks nice with my black receiver - The Quality & Functionality is good but it doesn’t have some of the visuals from the older one & is missing the red lights on the bottom. Is easy to use & it gives you old school vibes when jamming your songs.👍🏼

## Features

- VFD253 integrates mutiple functions into a whole: As an audio spectrum analyzer: adopts dedicated green VFD display screen with 25 × 15 high resolution, guarantee the accuracy of each frequency band.
- As a Bluetooth receiver and audio switcher: besides microphone pickup, also with Bluetooth 5.0 and 2 groups of 3.5mm AUX input, works perfectly with your phone/PC/game player/amplifier/speaker etc. As a high-precision clock: using RX8025T built-in crystal oscillator whose clock accuracy is ±3ppm, year error within 1 minutes, very cool and interesting.
- Wide frequency range & special AGC display: 80Hz-16KHz frequency sweep, high-precision display even can do frequency point test. Speical AGC algorithm and customized output curve, ensure ideal visual effects even the input signal is in a small to large range, avoid that no display when input low and display in full screen when input high.
- Many adjustable items & display effects: gain, brighntness, falling speed of main light column, holding time and falling speed of the peak can be adjusted separately. 5 music spectrum display mode and 2 clock display mode, all settings with power-off memory function, no need to set again after restarting.
- Attractive looking and convenient use: with remote control, easy to adjsut all settings and see the music level status in real time and every slight change of sound.CNC machined aluminum and transparent acrylic case, both solid and beautiful, compact design not occupy your desktop space.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CFD69C56 |
| Best Sellers Rank | #841,837 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #1,269 in Alarm Clocks |
| Customer Reviews | 4.3 4.3 out of 5 stars (53) |
| Date First Available | August 19, 2023 |
| Item Weight | 1.25 pounds |
| Item model number | VFD253 |
| Manufacturer | Douk Audio |
| Product Dimensions | 2.6 x 7.24 x 2.6 inches |

## Product Details

- **Audio Output Mode:** Stereo
- **Brand:** Douk Audio
- **Color:** Black
- **Compatible Devices:** Amplifier, Preamplifier
- **Connectivity Technology:** Auxiliary
- **Connector Type:** 3.5mm Jack
- **Controller Type:** Hand Control
- **Product Dimensions:** 2.6"D x 7.24"W x 2.6"H
- **Special Feature:** Built-In Bluetooth
- **Surround Sound Channel Configuration:** 2

## Images

![[Upgraded] VFD Audio Spectrum Analyzer Bluetooth 5.0 Receiver 3.5mm AUX Selector (Black) - Image 1](https://m.media-amazon.com/images/I/61QvmJ707CL.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ ITEM FAILED AND NO RESPONSE FROM THE COMPANY.
*by K***X on January 4, 2025*

Just like one of the reviewers who shared a video, this thing is great. He is right in saying the MIC alone function is horrible. Since I use my BT from my PC to send audio to my receiver, all I had to do was get a rca adapter to 1.5m stereo out to IN 1 or 2 of the spectrum analyzer. I plugged the rca side into my zone 2 pre out and the other end into the spectrum analyzer. then turn up the volume on zone 2 since most don't utilize zone 2. it works great. be sure when you receive this, it has the remote as it does simplify things when setting up. ****update**** 2-27-2025 the product is now failed and no longer powers on. I've tried to reach the company with no response. save your money and do not purchase this item. there is no product support. ****update*** 3-9-2025 after many days of no response I added the number on their web page to WhatsApp and reached out. Someone after a couple days responded but by this time I managed to get Amazon to refund the item and send the failed one back despite they charging me for a damaged item? Makes no sense. This company just sent out a replacement with out charging me. I appreciate their help and kindness to send a new one. I adjusted my review to 5 stars because they deserve it despite the initial no to slow response.

### ⭐⭐⭐⭐ Looks nice with my black receiver
*by R***A on October 13, 2025*

The Quality & Functionality is good but it doesn’t have some of the visuals from the older one & is missing the red lights on the bottom. Is easy to use & it gives you old school vibes when jamming your songs.👍🏼

### ⭐⭐⭐⭐⭐ Super cool!!!!
*by D***N on January 2, 2025*

Easy to setup and it works like a champ! Now I can zone out on lights. The remote is nice otherwise it would be hard to operate.

## Frequently Bought Together

- [Upgraded] VFD Audio Spectrum Analyzer Bluetooth 5.0 Receiver 3.5mm AUX Selector (Black)
- BESIGN Ground Loop Noise Isolator for Car Audio/Home Stereo System with 3.5mm Audio Cable
- 3.5mm Angle Male to Female Audio Adapter, 90 Degree Right Angle Gold-Plated TRS Stereo Jack Plug AUX Connector Compatible with Headset, Tablets, MP3 Players, Game Controller, Speakers(2 PACK)

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-03-07*