
Passive Design|ALPS RK27 Potentiometer|Lossless Audio|24K Gold RCA|Full Aluminum Chassis|No Power Needed
Without internal gain, ensuring pristine, distortion-free audio directly from your source.
ALPS RK27 dual potentiometer delivers smooth, precise, and step-less volume adjustments.
US CMC-816U gold-plated connectors offer unmatched clarity, minimizing audio signal loss.
CNC-machined aluminum chassis provides both durability and modern aesthetic appeal.
Perfect for DACs, CD players, and high-gain amplifiers seeking true sound fidelity.
Ideal for minimalist desktop setups, providing exceptional sound without clutter.
| Brand: | Nobsound |
| Model: | VOL-3 |
| Potentiometer: | ALPS RK27 |
| Audio input: | Stereo RCA |
| Audio output: | Stereo RCA |
| Power required: | No |
| Color: | Black |
| Dimensions (W*D*H): | 94 × 52 × 43mm / 3.70 × 2.05 × 1.69in |
| Package dimensions (W*D*H): | 180 × 88 × 70mm / 7.09 × 3.46 × 2.76in |
| Net weight: | 224g / 0.49lb |
| Package weight: | 300g / 0.66lb |
Why should I choose a passive preamp over an active one?
Passive preamps do not amplify the signal, ideal for sources like DACs or CD players with high output. They minimize sound coloration since no powered components are involved, ensuring pure audio reproduction.
Do I need any external power source for this passive preamp?
No, this passive preamp requires no external power source. It operates entirely passively, providing clean audio control without additional electricity or power cords.
Can I experience noise or interference with this preamp?
Using high-quality RCA cables with effective shielding is essential. Poor quality cables may cause noise or interference due to the preamp’s passive nature and sensitivity to signal quality.
Does this passive preamp amplify or boost the audio volume?
No, this preamp has no amplification or gain. It only manages and attenuates the existing audio signal level, ensuring the purest possible sound from source to speaker.
Can this passive preamp work with active speakers or power amplifiers?
Yes, it’s specifically suitable for active speakers and power amplifiers that already provide adequate gain, allowing clean and precise volume control without unnecessary amplification.
Passive Preamp | Type: | Passive Preamp |
RCA | Audio Input: | XLR |
RCA | Audio Output: | XLR |
Passive, No Power | Power: | Passive, No Power |
ALPS RK27 | Potentiometer: | ALPS RK27 |
Passive Preamp | Type: | Passive Preamp |
RCA | Audio Input: | Switchable RCA / XLR |
RCA | Audio Output: | Switchable RCA / XLR |
Passive, No Power | Power: | Passive, No Power |
ALPS RK27 | Potentiometer: | ALPS 09 |
Passive Preamp | Type: | Passive Audio Switch |
RCA | Audio Input: | 3 * XLR IN |
RCA | Audio Output: | 1 * XLR OUT |
Passive, No Power | Power: | Passive, No Power |
ALPS RK27 | Potentiometer: | - |
Passive Preamp | Type: | Passive Audio Switch |
RCA | Audio Input: | 2 * XLR IN |
RCA | Audio Output: | 1 * XLR OUT |
Passive, No Power | Power: | Passive, No Power |
ALPS RK27 | Potentiometer: | - |

Make Hi-Fi Affordable

Estabilshed in 2013, Douk Audio & Nobsound is created by a group of enthusiastic music fans and professional audio experts.
We design and make various audio equipments including amplifier, phono preamp, headphone amp, DAC, audio switch and so on.
Our aim is "Make Hi-Fi Affordable" !


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