---
product_id: 627117433
title: "[Upgraded] VFD Audio Spectrum Analyzer Bluetooth 5.0 Receiver 3.5mm AUX Selector (Black)"
brand: "douk audio"
price: "C$23723"
currency: NIO
in_stock: true
url: https://www.desertcart.ni/products/627117433-upgraded-vfd-audio-spectrum-analyzer-bluetooth-5-0-receiver-3
store_origin: NI
region: Nicaragua
---

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

**Brand:** douk audio
**Price:** C$23723
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your soundscape 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?** C$23723 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/627117433-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

- • **Precision Timekeeping:** Built-in RX8025T crystal oscillator ensures clock accuracy within ±3ppm, keeping your workspace stylishly on time.
- • **Sleek & Compact Design:** CNC-machined aluminum and transparent acrylic case deliver a premium, space-saving aesthetic that elevates any desk or studio.
- • **Crystal-Clear VFD Display:** Experience ultra-precise 25×15 resolution visuals that bring every frequency band to life with vibrant clarity.
- • **Seamless Multi-Source Audio:** Switch effortlessly between Bluetooth 5.0, microphone, and dual 3.5mm AUX inputs—perfect for your dynamic audio setup.
- • **Customizable Visual Experience:** Adjust gain, brightness, peak hold, and fall speeds with 5 spectrum modes and 2 clock displays—tailor your vibe and never miss a beat.

## Overview

The [Upgraded] VFD Audio Spectrum Analyzer Bluetooth 5.0 Receiver 3.5mm AUX Selector (Black) is a multifunctional audio device featuring a high-resolution 25×15 green VFD display for accurate frequency visualization, Bluetooth 5.0 connectivity, dual 3.5mm AUX inputs, and a built-in ultra-precise clock with ±3ppm accuracy. It offers extensive customization of display modes and settings, remote control convenience, and a premium CNC-machined aluminum and acrylic design, making it an essential tool for audiophiles and professionals seeking both performance and style.

## 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

## 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 |
|---------------|-------|
| Brand | Douk Audio |
| Manufacturer | Douk Audio |
| Model | VFD253 |
| Product Dimensions | 6.6 x 18.39 x 6.6 cm; 570 g |
| Item model number | VFD253 |
| Compatible Devices | Amplifier, Preamplifier |
| Special Features | Built-In Bluetooth |
| Mounting Hardware | 1*audio spectrum; 1*usb cable; 1*remote |
| Number of items | 1 |
| Audio output mode | Stereo |
| Audio Output Type | Speakers |
| Speaker Surround Sound Channel Configuration | 2 |
| Batteries Included | No |
| Batteries Required | No |
| Connector Type | Auxiliary |
| Manufacturer | Douk Audio |
| Item Weight | 570 g |

## Product Details

- **Brand:** Douk Audio
- **Connectivity Technology:** Auxiliary
- **Controller Type:** Hand Control
- **Special Feature:** Built-In Bluetooth
- **Compatible Devices:** Amplifier, Preamplifier
- **Connector Type:** 3.5mm Jack
- **Audio Output Mode:** Stereo
- **Surround Sound Channel Configuration:** 2
- **Colour:** Black
- **Product Dimensions:** 6.6D x 18.4W x 6.6H Centimeters

## 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 **Colour** options.

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.ni/products/627117433-upgraded-vfd-audio-spectrum-analyzer-bluetooth-5-0-receiver-3](https://www.desertcart.ni/products/627117433-upgraded-vfd-audio-spectrum-analyzer-bluetooth-5-0-receiver-3)

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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-02-28*