--- product_id: 639026526 title: "Douk Audio Plastic Nobsound Music Spectrum Audio 15 Level Indicator VU Meter Screen Amplifier VFD LED Display (PJ454)" brand: "douk audio" price: "A$145" currency: AUD in_stock: true reviews_count: 9 category: "Douk Audio" url: https://www.desertcart.com.au/products/639026526-douk-audio-plastic-nobsound-music-spectrum-audio-15-level-indicator store_origin: AU region: Australia --- # ±3.8ppm ultra-precise clock 20Hz-20KHz frequency range 25x15 high-res VFD display Douk Audio Plastic Nobsound Music Spectrum Audio 15 Level Indicator VU Meter Screen Amplifier VFD LED Display (PJ454) **Brand:** douk audio **Price:** A$145 **Availability:** ✅ In Stock ## Summary > 🎵 Elevate your sound game with precision and style — don’t just hear it, see it! ## Quick Answers - **What is this?** Douk Audio Plastic Nobsound Music Spectrum Audio 15 Level Indicator VU Meter Screen Amplifier VFD LED Display (PJ454) by douk audio - **How much does it cost?** A$145 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/639026526-douk-audio-plastic-nobsound-music-spectrum-audio-15-level-indicator) ## 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 - • **Tailored Audio Precision:** Adjust gain from -10 to 0dB and choose from 3 display modes to match your unique sound environment. - • **Seamless Dual Input Flexibility:** Plug in via 3.5mm AUX or MIC for wired or wireless sound analysis anytime, anywhere. - • **Crystal-Clear Spectrum Visualization:** Experience every beat with a stunning 25x15 VFD display that captures every frequency nuance. - • **Customizable & Memory-Powered Interface:** Set brightness, peak hold, fonts, and modes with power-off memory—no need to reset after every use. - • **Smart Noise Filtering & Frequency Tuning:** One-click noise suppression and 5 frequency/amplification curves ensure pristine sound clarity in any setting. ## Overview The Douk Audio Plastic Nobsound Music Spectrum Audio VU Meter (PJ454) is a high-precision 15-level VFD display amplifier featuring a 25x15 resolution spectrum analyzer and an ultra-accurate ±3.8ppm clock. Supporting a wide 20Hz-20KHz frequency range with dual 3.5mm AUX/MIC inputs, it offers adjustable gain, multiple display modes, noise filtering, and customizable settings with memory function—perfect for professionals seeking detailed audio visualization and control. ## Description Douk Audio Plastic Nobsound Music Spectrum Audio 15 Level Indicator VU Meter Screen Amplifier VFD LED Display (PJ454) : desertcart.in: Electronics Review: Excellent device!👌🏼 - Works perfectly fine and as described. If you're looking for a vintage vacuum tube based crystal clear spectrum analyzer for music frequency details, go for it. Five stars for its operational accuracy 💯, charming music enhancement and controlled menu options. Review: Excellent product. Must for audiophiles. - Working absolutely well. Easy to assemble. ## Features - Accurate music spectrum analyzer & clock display: adopts dedicated VFD display screen with 25 × 15 high resolution, guaranteeing the accuracy of each frequency band. Also with a high-precision clock display, using SD3078 built-in crystal oscillator which can enWide frequency range display & 3.5mm AUX/MIC input: support 20Hz-20KHz frequency sweep, high-precision display even can do frequency point tesure that the clock accuracy is ±3.8ppm, month error within 10 seconds, very cool and interesting. - Wide frequency range display & 3.5mm AUX/MIC input: support 20Hz-20KHz frequency sweep, high-precision display even can do frequency point test. With a 3.5mm AUX and sensitive MIC pick-up, perfectly achieve wired and wireless connections, you can easily see every subtle change in sound. - Special AGC and spectrum algorithm & customized output curve: ensure ideal visual effects even the input signal is in a small to large range, even can switch the gain between -10/-5/-3/-1/0dB. With 3 kinds of display modes: real output / smooth output I / smooth output II, both ensure accuracy and best display effects, satisfy different usage requirements. - Many adjustable items & display effects: the brightness, the falling speed of main light column, the holding time and the falling speed of the peak can be adjusted separately. Supports displaying date and time, 4 fonts, 5 music spectrum display modes, 5 clock display modes, and 3 level modes for free selection, all settings with power-off memory function, no need to set it again after restarting. - Frequency division/amplification curve function and noise filtering: 5 frequency division modes can make the visual effect better; 5 amplification curve modes can suppress low-frequency or boost high-frequency. With one click noise filtering function, effectively improves the clarity of sound, and is well-adapted for use in different environments. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07BRSSR8H | | Best Sellers Rank | #160,171 in Electronics ( See Top 100 in Electronics ) #238 in Hi-Fi Amplifiers | | Brand | Douk Audio | | Brand Name | Douk Audio | | Customer Reviews | 4.4 out of 5 stars 324 Reviews | | Manufacturer | Nobsound | | Material Type | Plastic | | Maximum Supply Voltage | 5 Volts | | Minimum Supply Voltage | 5 Volts | | Model Number | PJ454_US | | Mounting Type | Surface Mount | | Number of Channels | 15 | | Number of Items | 1 | | Number of Packs | 1 | | Package Type Name | box | | Part Number | PJ454_US | | Specification Met | FCC | | Unit Count | 1 Count | | Voltage | 38 Volts | ## Product Details - **Voltage:** 5 Volts (DC) - **Manufacturer:** Nobsound - **Maximum Supply Voltage:** 5 Volts - **Minimum Supply Voltage:** 5 Volts - **Mounting Type:** Surface Mount ## Images ![Douk Audio Plastic Nobsound Music Spectrum Audio 15 Level Indicator VU Meter Screen Amplifier VFD LED Display (PJ454) - Image 1](https://m.media-amazon.com/images/I/81XOG0NpT7L.jpg) ![Douk Audio Plastic Nobsound Music Spectrum Audio 15 Level Indicator VU Meter Screen Amplifier VFD LED Display (PJ454) - Image 2](https://m.media-amazon.com/images/I/71skaL6ZwQL.jpg) ![Douk Audio Plastic Nobsound Music Spectrum Audio 15 Level Indicator VU Meter Screen Amplifier VFD LED Display (PJ454) - Image 3](https://m.media-amazon.com/images/I/81-dzcwRcML.jpg) ![Douk Audio Plastic Nobsound Music Spectrum Audio 15 Level Indicator VU Meter Screen Amplifier VFD LED Display (PJ454) - Image 4](https://m.media-amazon.com/images/I/81Dm-KNKXHL.jpg) ![Douk Audio Plastic Nobsound Music Spectrum Audio 15 Level Indicator VU Meter Screen Amplifier VFD LED Display (PJ454) - Image 5](https://m.media-amazon.com/images/I/71iiUXDdkVL.jpg) ## Questions & Answers **Q: Is this plug and play unit?** A: Hello. Yes. It is a finished product. You only need to connect signal input and power input. **Q: The clock is very annoying! Any way to disable it, so it only acts as a spectrum display? Thanks** A: Disconnect from headphone jack when not in use. **Q: when plugged in to a audio source, Ii have 2 or 3 bars flickering like there picking up some interference. any solutions?** A: Got something similar happening with many bands even when there is minimal audio input. The problem appears to be a poor connection between the 1/8" plug and the socket on the analyser. What I have done is remove the plug, clean it, re-insert it and check. If that doesn't immediately solve the issue, I twist the plug in the socket until I get it to a position that zero input registers nothing on the analyser. **Q: What are the unit's dimensions?** A: 7" x 2" x 1" ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent device!👌🏼 *by A***R on 7 August 2026* Works perfectly fine and as described. If you're looking for a vintage vacuum tube based crystal clear spectrum analyzer for music frequency details, go for it. Five stars for its operational accuracy 💯, charming music enhancement and controlled menu options. ### ⭐⭐⭐⭐⭐ Excellent product. Must for audiophiles. *by R***R on 25 May 2025* Working absolutely well. Easy to assemble. ### ⭐⭐⭐⭐ Good VFD spectrum analyzer but no control of the filament driver. *by A***R on 3 September 2026* Nice product but the controls are complicated. Cons- VFD filaments (cathode) are getting bit red which is visible in less light area, no control to adjust the filament voltage. It can reduce the life of the VFD. ## Frequently Bought Together - Nobsound AK2515 Pro Audio Spectrum Analyzer with VFD Display, MIC Input & Advanced AGC - Precise Sound Level Meter for Musicians and Audio Enthusiasts - Amazon Basics 3.5mm Stereo Aux to 2 x RCA Audio Cable Adapters, 4 Feet/1.2 m, for Connecting Amplifiers, Speakers, with Gold-Plated Plugs, Black --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.au/products/639026526-douk-audio-plastic-nobsound-music-spectrum-audio-15-level-indicator](https://www.desertcart.com.au/products/639026526-douk-audio-plastic-nobsound-music-spectrum-audio-15-level-indicator) --- *Product available on Desertcart Australia* *Store origin: AU* *Last updated: 2026-11-14*