--- product_id: 254570313 title: "Mini Fully-Balanced/Single-Ended Passive Preamp; Hi-Fi Pre-Amplifier; XLR/RCA Volume Controller for Active Monitor Speakers (Black)" brand: "nobsound" price: "£101.44" currency: GBP in_stock: true reviews_count: 5 url: https://www.desertcart.co.uk/products/254570313-mini-fully-balanced-single-ended-passive-preamp-hi-fi-pre store_origin: GB region: United Kingdom --- # Dual XLR/RCA Input & Output Switchable Compact Metal Enclosure, Sleek Black Finish ALPS 09 Quadruple Fully-Balanced Potentiometer Mini Fully-Balanced/Single-Ended Passive Preamp; Hi-Fi Pre-Amplifier; XLR/RCA Volume Controller for Active Monitor Speakers (Black) **Brand:** nobsound **Price:** £101.44 **Availability:** ✅ In Stock ## Summary > 🎧 Elevate your audio game with pure, uncolored control—because your monitors deserve the best. ## Quick Answers - **What is this?** Mini Fully-Balanced/Single-Ended Passive Preamp; Hi-Fi Pre-Amplifier; XLR/RCA Volume Controller for Active Monitor Speakers (Black) by nobsound - **How much does it cost?** £101.44 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/254570313-mini-fully-balanced-single-ended-passive-preamp-hi-fi-pre) ## Best For - nobsound enthusiasts ## Why This Product - Trusted nobsound brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Space-Smart Design:** Miniature footprint fits perfectly on any desk without cluttering your audio workspace. - • **Pure Sound Integrity:** No amplifying circuit means zero tonal coloration—hear your monitors exactly as intended. - • **Versatile Connectivity:** Seamlessly switch between fully-balanced XLR and single-ended RCA inputs/outputs for ultimate compatibility. - • **Effortless Mode Selection:** Toggle easily between input/output and balanced/single-ended modes to tailor your setup instantly. - • **Audiophile-Grade Components:** Premium ALPS potentiometer and NEUTRIK connectors ensure precision volume control and durability. ## Overview The Nobsound Mini Fully-Balanced/Single-Ended Passive Preamp is a compact, high-end volume controller designed for active monitor speakers. Featuring premium ALPS 09 potentiometers and professional-grade NEUTRIK XLR and RCA connectors, it offers switchable balanced and single-ended modes without any amplification, preserving the original sound signature. Its sleek black metal enclosure and space-saving design make it an essential tool for audiophiles and professionals seeking pristine, unaltered audio control. ## Description The Best Choice for Active Speakers More and more audiophiles find that the behavior of normal multimedia speakers cannot meet their demands, and then they choose professional active monitor speakers. However, this kind of speakers usually doesn't have a volume controller, which means a pre-amplifier is needed. Active monitor speakers are mostly placed on the desk and used for near field listening. So they need to consider the area required for Hi-Fi pre-amplifiers (normally very big). What'more, different pre-amplifiers may differ in their timbres and this is the most bothersome issue. As an audiophile brand, Nobsound decided to solve this problem and designed this product. Its small size won't take much place and its clean silver color suits for various usage scenarios. There is no amplifying circuit in the device and won't change the timbre, while the amplifier in the active speaker is enough to drive it. With this product, you can enjoy the most original timbre and quality of the speakers and won't be trapped in the selection of pre-amplifiers. Specifications: Dimension: 148 x 48 x 80 (mm) Weight: 0.6 (Kg) Impedance: 50KΩ Input: RCA / XLR (selection switch) Output: RCA / XLR (selection switch) Package: 1 * pre-amplifier ## Features - This product uses the expensive ALPS 09 quadruple fully-balanced potentiometer, NEUTRIK XLR, Pro-Singnal RCA. Nobsound never be stingy in the components and materials of our products. - This prodcut has a small size, while is still euipped with commonly-used interfaces. There is a selection switch which you can choose the fully-balanced or single-ended audio signal mode, as well as the output or input mode. - This prodcut has no amplifying circuit and won't change the timbre. You can enjoy the most original sound of your active monitor speakers. - Its clean black appearance suits for almost every usage scenarios. - PLEASE NOTE: This is a PASSIVE PREAMPLIFIER. It has NO amplifying circuit. ## Technical Specifications | Specification | Value | |---------------|-------| | Amplifier Type | Solid State | | Asin | B01MXC9HHW | | Best Sellers Rank | #184,531 in Electronics (See Top 100 in Electronics) #65 in Home Audio Preamplifiers | | Brand | Nobsound | | Color | Black | | Compatible Devices | Active monitor speakers, possibly some musical instrument amplifiers | | Connector Type | XLR, RCA | | Customer Reviews | 4.3 4.3 out of 5 stars (169) 4.3 out of 5 stars | | Enclosure Material | Metal | | Item Dimensions D X W X H | 4.8D x 14.8W x 8H centimeters | | Item Weight | 499 g | | Manufacturer | Nobsound | | Mfr Part Number | 4330356338 | | Model Name | Mini Fully-Balanced/Single-Ended Passive Preamp | | Model Number | 4330356338 | | Output Channel Quantity | 2 | | Output Wattage | 1 Watts | | Power Source | Corded Electric | ## Product Details - **Brand:** Nobsound - **Colour:** Black - **Compatible devices:** Active monitor speakers, possibly some musical instrument amplifiers - **Material:** Metal - **Output wattage:** 1 Watts ## Images ![Mini Fully-Balanced/Single-Ended Passive Preamp; Hi-Fi Pre-Amplifier; XLR/RCA Volume Controller for Active Monitor Speakers (Black) - Image 1](https://m.media-amazon.com/images/I/615Y5WVy0+L.jpg) ## Questions & Answers **Q: Is the reason for this box to convert unbalanced rcas to a balanced xlr signal? it’s just for defeating possible unbalanced signal noise?** A: I think most people purchase this box for volume control. It has a high quality potentiometer for this purpose. It will convert an RCA input to a balanced, XLR, output. But it would probably be more cost effective, and space saving, to purchase RCA to XLR cables if that’s all you want to do. **Q: Does this preamp output +4dBu or -10dbV?** A: Hello. This is a fully passive preamp with no amplification function. **Q: Is the case (including front panel) made of metal?** A: Yes, all metal. It is a ver solid unit. **Q: Can i use this between an amp (Topping MX3) and powered speakers to protect the speakers amp?** A: No. It would make more sense to use the headphone output and find a splitter to connect it to your powered speakers. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Better than hoped for my needs *by on Reviewed in the United States 16 June 2022* I bought the Xduoo MT-604 hybrid amp, which has separate volume controls for right and left ears (annoying). Furthermore, the volume ramp up on this amp was SO FAST for each knob. THEN I hooked up my new Hifiman EF400 as a DAC, which seemed to overdrive and distort the inputs on the MT-604. My Focal Clear and Spirit Torino Radiante sounded too sharp/abrasive.This wee volume knob solved ALL of these problems. I can raise the volume on the hybrid amp way higher (probably getting more out of the amp), and I can control the volume with ONE knob. In addition, the output from the Hifiman DAC no longer runs hot into the amp, so the distortion is gone.IN ADDITION (big suprise), my formerly sharp Focal Clears and Radiante both sound well-tuned and easy to listen to. They sound fantastic now on the same hybrid amp.So, for me, I'm overjoyed by this product.That said, I'm not sure whether an impedance "issue" with this knob may be changing the sound signature of the output in ways that may be problematic for other users, or whether simply tempering the hot DAC output and cranking the amp "balanced" the headphone sound. So there may be a problem lurking for others with different gear, but for my situation I am extremely pleased.Everything sounds and feels excellent. No issues in my very short time with it. The price and value are fantastic relative to most alternatives. I very highly recommend at least trying this product if you have a similar need. ### ⭐⭐⭐⭐⭐ Awesome. But ensure this is what you need! *by on Reviewed in Canada 9 February 2019* I needed an all passive volume knob with XLR in and out, and this fits the bill perfectly. Doesn't seem to color the sound noticeably, and works just fine.I'm running a standalone USB DAC to a Marantz 5 channel Power amp. Since the power amp has no volume control, this fit the bill. This item is definitely a niche product for a very uncommon setup. Make sure this is what you need! ### ⭐⭐⭐⭐⭐ Exactly what I wanted *by on Reviewed in Canada 23 August 2019* Great price and perfect for my application. I wanted to switch between my subs and headphone amp from the XLR connectors on my DAC/preamp. This little unit does the trick perfectly. I can't hear any sonic degradation, even through my Hafler HA15 headphone amp and Grado GH4 headphones.It also gave me one level controller for my dual subs, which are in opposite corners of the room. Nicely built unit and well thought out. ## Frequently Bought Together - Nobsound Mini Fully-Balanced/Single-Ended Passive Preamp; Hi-Fi Pre-Amplifier; XLR/RCA Volume Controller for Active Monitor Speakers (Black) - Cable Matters 2-Pack Premium Short XLR to XLR Cables - 3ft, Male to Female Microphone Cable, Oxygen-Free Copper (OFC) Mic Cord, Black - VANDESAIL XLR Cables, 3ft 2 Pack Microphone Cable, XLR Male to Female Balanced Microphone Cord 3 pin, 3 Foot Short mic Cord Oxygen-Free Copper (OFC) Nylon Braided --- ## 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.co.uk/products/254570313-mini-fully-balanced-single-ended-passive-preamp-hi-fi-pre](https://www.desertcart.co.uk/products/254570313-mini-fully-balanced-single-ended-passive-preamp-hi-fi-pre) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-08-30*