---
product_id: 274243014
title: "SUCA AUDIO Tube Preamplifier for Home Audio Player Mini Hi-Fi Stereo Preamp with Treble & Bass Control (6K4 Tubes)"
brand: "suca audio"
price: "€ 0.57"
currency: EUR
in_stock: false
url: https://www.desertcart.fi/products/274243014-suca-audio-tube-preamplifier-for-home-audio-player-mini-hi
store_origin: FI
region: Finland
---

# RCA input/output for versatile digital amp connection Independent bass & treble control knobs 6K4 vacuum tubes for warm, dynamic sound SUCA AUDIO Tube Preamplifier for Home Audio Player Mini Hi-Fi Stereo Preamp with Treble & Bass Control (6K4 Tubes)

**Brand:** suca audio
**Price:** € 0.57
**Availability:** ❌ Out of Stock

## Summary

> 🎧 Elevate your sound game with vintage warmth and modern control!

## Quick Answers

- **What is this?** SUCA AUDIO Tube Preamplifier for Home Audio Player Mini Hi-Fi Stereo Preamp with Treble & Bass Control (6K4 Tubes) by suca audio
- **How much does it cost?** € 0.57 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/274243014-suca-audio-tube-preamplifier-for-home-audio-player-mini-hi)

## Best For

- suca audio enthusiasts

## Why This Product

- Trusted suca audio brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Tailor Your Tone:** Fine-tune bass and treble independently for a personalized HiFi listening experience.
- • **Modular Tube Design:** Easily swap tubes like 6J1, 6J2, or GE5654 to customize your sonic signature.
- • **Built to Last & Backed:** Durable aluminum alloy chassis with noise-eliminating circuits and a 12-month warranty for peace of mind.
- • **Warm Analog Tube Vibes:** Experience rich, dynamic sound with 6K4 vacuum tubes that bring your music to life.
- • **Plug & Play Versatility:** Seamlessly connect your digital devices via RCA inputs and outputs—perfect for modern setups.

## Overview

This Tube Preamplifier uses 6K4 vacuum tubes to enrich your audio with warm, dynamic tones. It features independent bass and treble controls for precise sound customization and connects easily to digital amplifiers via RCA inputs and outputs. Designed with a durable aluminum alloy shell and noise-reducing circuits, it offers reliable, high-fidelity sound enhancement for your home audio setup. Note: It is not a power amplifier and cannot drive passive speakers directly.

## Description

Features:1.Compact design, space saving. 2.Optimize integrated circuit and high quality power supply to minimize the noise.3.6K4 tube can be replaced by 6J1, 6J4, GE5654, 6AK5.4.With Treble and Bass control function, high playability.5.Provide warmth, dynamic,sweet sound feeling.Warm Tips:✔It is NOT a phono preamp for turntable. To order a PHONO Preamp, please visit B07QBXV3CG or B07XHJ9ZND.✔The preamp need to connect with a power amplifier or active speaker, can't connect with a passive speaker directly.✔Don’t replace the tube when the power on, otherwise the tube & machine will be demaged.About the NoiseQ: Why there will be a noise?A:Low-quality rca cables and power supply will generate noise; Poor connection or defective of the vacuums tubes; EMI around the machine.Q: How to Fix the problem? 1.Wireless devices arround the preamp or speaker and audio cables contact with the machine will case emi, please check.2.Turn off the machine and well connect all parts(tubes, audio cables, power supply and etc.) again.3.Turn on the preamp, minimize the volume, if still a noise, that maybe the problem of the power supply; 4.If the noise increase simultaneously with the volume up , unplug the rca input cable. If there no noise, it is the problem of the rac input cable; If have, please check the output cable.5.Burnning the machine/tubes for a period of time(about 48hours) may solve the problem.6.If all above checking finish but not solve your problem, we provide 12 month replacement or refund.Specifications:Power Supply: DC 12V/1.5AFrequency Response: 20HZ -20KHZ((±3dB)SNR: 98DBTHD: 0.1%Control：BASS, Treble, VolumeTreble adjustment range: ±6dBBass adjustment range: ±10dBAudio Inputs/Audio Outputs: Gold-plated RCAPackage Include:1 x Tube Preamplifier2 x 6K4 Tube1 x Power Supply

## Features

- ♪ NOTE - This is a preamplifier but NOT a power amplifier or a phono preamp, CAN'T be used for turntables or passive speakers. The main purpose of this machine is to act as a "buffer" to sweet the sound to achieve pleasant sound quality.
- ♪ RCA INPUT & OUTPUT - Input the sound source via your computer, CD, smartphone, iPod or other media with a RCA cable( Not Include), then RCA out put to the digital amplifiers, active multimedia audio devices for lossless audio(CAN NOT connect passive speaker directly).
- ♪ WARM TUBE SOUND - Vacuum tube preamp will give you a different acoustic enjoyment with dynamic, sweet tube sound enjoyment. Tubes detachable design, you CAN REPLACE the tube to tweaking the sound. 6j1,6j2,6J4,GE5654,6AK5 and 6*1n tubes are suitable for this preamp.
- ♪ BASS &TREBLE CONTROL - The vacuum tube preamplifier can independently adjust the bass and the specific proportion components in high-frequency sound to perfectly achieve HiFi effects.It ensures more delicate adjustment of music to satisfy your experience of different sound styles according to your preference.
- ♪ HIGH QUALITY & AFTER SALE SERVICE - Uses accurate and stable integrated circuits and high-quality components to eliminate low-frequency noise and ensure clear sound quality. The all aluminum alloy shell also makes it durable for use. We provide 12-month manufacturer's warranty, no risk purchase.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Amplifier Type | Tube |
| Connector Type | RCA |
| Compatible Devices | Guitar |
| Output Wattage | 5 Watts |
| Item Dimensions D x W x H | 4.72"D x 3.94"W x 1.38"H |

## Product Details

- **Brand:** SUCA AUDIO
- **Colour:** Black
- **Compatible devices:** Double Bass
- **Output wattage:** 5 Watts
- **Model name:** SUCA AUDIO Tube Preamplifier

## Images

![SUCA AUDIO Tube Preamplifier for Home Audio Player Mini Hi-Fi Stereo Preamp with Treble & Bass Control (6K4 Tubes) - Image 1](https://m.media-amazon.com/images/I/61m+ZcRPAsL.jpg)
![SUCA AUDIO Tube Preamplifier for Home Audio Player Mini Hi-Fi Stereo Preamp with Treble & Bass Control (6K4 Tubes) - Image 2](https://m.media-amazon.com/images/I/71uE2b-v47L.jpg)
![SUCA AUDIO Tube Preamplifier for Home Audio Player Mini Hi-Fi Stereo Preamp with Treble & Bass Control (6K4 Tubes) - Image 3](https://m.media-amazon.com/images/I/71ko2MphDwL.jpg)
![SUCA AUDIO Tube Preamplifier for Home Audio Player Mini Hi-Fi Stereo Preamp with Treble & Bass Control (6K4 Tubes) - Image 4](https://m.media-amazon.com/images/I/71SjhLiGu5L.jpg)
![SUCA AUDIO Tube Preamplifier for Home Audio Player Mini Hi-Fi Stereo Preamp with Treble & Bass Control (6K4 Tubes) - Image 5](https://m.media-amazon.com/images/I/71DG1jn3W0L.jpg)

## Questions & Answers

**Q: I am looking to make the audo louder from my computer to amplifier will this do it? thanks**
A: Not really . . . : A preamp (and this is a preamp) only raises the volume of the signal slightly . . . an amp, or amplifier raises it to levels that can power passive speakers.  Active speakers have an amp built in.  So, you can go from computer to an amp, or from a computer to powered speakers and don't need a preamp.  Or, go from the computer to this preamp, then to an amp or powered speakers.  You don't NEED a preamp at all if you have an amp, but you can use one if you want to add a volume knob in between the source and speaker, or want to add a tube pre like this for 'color' to alter the qualities of the sound.  Sounds like you want an AMP not a preamp otherwise.

**Q: I'm using philips shp9500 headphones. at a maximum of 32 ohms, could i just combine my headphones with this pre-amplifier without an amp? (pc dac)**
A: This is a pre-amplifier, not a headphone amplifier. Headphones like the Sennheiser HD6xx could be used because of their high impedance (600 ohms) at a low volume. The 32 ohm Philips headphones may cause issues with this pre-amp.

**Q: Can i use this product from a 3.5 mm headphone jack on a tablet to a rca line input on a stereo receiver?**
A: Yes, you will need to use a cable that has RCA plugs in one end and a headphone plug (1/8") on the other. The headphone plug goes into the tablet and the RCA plugs go into the input of the SUCA-AUDIO. You will use another cable with RCA plugs on both ends. Plug in the RCA plugs on one end into the outputs of the SUCA-AUDIO. The RCA plugs on the other end go into your stereo receiver inputs.

**Q: What other tubes can I upgrade this with? Thanks**
A: Get the readily available Riverstone Matched pair 5654W from Amazon, or there are lots of varieties on eBay to try! 

Voshkod 6j1P's sound amazing in this.

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-19*