--- product_id: 639026526 title: "Plastic Nobsound Music Spectrum Audio 15 Level Indicator VU Meter Screen Amplifier VFD LED Display (PJ454)" brand: "douk audio" price: "₩175270" currency: KRW in_stock: true reviews_count: 8 url: https://www.desertcart.kr/products/639026526-plastic-nobsound-music-spectrum-audio-15-level-indicator-vu-meter store_origin: KR region: South Korea --- # ±3.8ppm ultra-precise clock 20Hz-20KHz frequency range 25x15 high-res VFD display Plastic Nobsound Music Spectrum Audio 15 Level Indicator VU Meter Screen Amplifier VFD LED Display (PJ454) **Brand:** douk audio **Price:** ₩175270 **Availability:** ✅ In Stock ## Summary > 🎵 Elevate your sound game with precision and style — don’t just hear it, see it! ## Quick Answers - **What is this?** Plastic Nobsound Music Spectrum Audio 15 Level Indicator VU Meter Screen Amplifier VFD LED Display (PJ454) by douk audio - **How much does it cost?** ₩175270 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/639026526-plastic-nobsound-music-spectrum-audio-15-level-indicator-vu-meter) ## 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 VFD Sound Level Meter / VU Meter Screen Display AK2515 PRO is a high-precision music spectrum analyzer with a 25x15 VFD display and a reliable clock function. It supports a broad frequency range and offers versatile input options. Advanced algorithms ensure clear audio visualization, and customizable settings with memory function cater to diverse user needs. 25x15 display for detailed spectrum analysis and a ±3.8ppm accurate clock. Dual 3.5mm AUX/MIC ports for flexible audio input. Adjustable gain (-10 to 0dB) and display modes for various audio levels, with user-friendly interface and settings memory. Enhance sound clarity with noise filtering and switch between auto, sleep, spectrum, and clock modes for tailored audio analysis. Douk Audio AK2515 PRO VFD253 Audio Spectrum - B MC103 Pro 3-IN-1-OUT Douk Audio BS-1 Douk Audio VU3 PRO Nobsound EQ9 ## 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 | #179,426 in Electronics (See Top 100 in Electronics) #293 in Hi-Fi Amplifiers | | Brand Name | Douk Audio | | Customer Reviews | 4.4 4.4 out of 5 stars (307) 4.4 out of 5 stars | | 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 ![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) ## 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 on Reviewed in India 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 on Reviewed in India 25 May 2025* Working absolutely well. Easy to assemble. ### ⭐⭐⭐⭐⭐ Nice product *by on Reviewed in India 29 June 2025* प्रोडक्ट अच्छा हे लेकिन सेटिंग थोड़ी मुश्किल कंपानी को सेटिंग करके भेजना चाहिए मेरे प्रोडक्ट में ऑडियो इन करने के बाद भी वौइस् पर रियेक्ट कर रहा हे क्या ये पर9डक्ट का प्रॉब्लम हे या सेटिंग करनी पड़ेगी ## 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.kr/products/639026526-plastic-nobsound-music-spectrum-audio-15-level-indicator-vu-meter](https://www.desertcart.kr/products/639026526-plastic-nobsound-music-spectrum-audio-15-level-indicator-vu-meter) --- *Product available on Desertcart South Korea* *Store origin: KR* *Last updated: 2026-09-30*