---
product_id: 733647718
title: "Douk Audio Balanced EQ Preamp: 7 Band Equalizer - XLR Vacuum Tube Preamp with RCA Input & Output - For Home Stereo HiFi Systems, Amplifiers, Active Speaker (T8 PRO Black)"
brand: "douk audio"
price: "C$19286"
currency: NIO
in_stock: true
reviews_count: 1
category: "Douk Audio"
url: https://www.desertcart.ni/products/733647718-douk-audio-balanced-eq-preamp-7-band-equalizer-xlr-vacuum
store_origin: NI
region: Nicaragua
---

# Upgradable vacuum tube warmth Dual XLR/RCA balanced I/O 7-band EQ precision (50Hz-16KHz) Douk Audio Balanced EQ Preamp: 7 Band Equalizer - XLR Vacuum Tube Preamp with RCA Input & Output - For Home Stereo HiFi Systems, Amplifiers, Active Speaker (T8 PRO Black)

**Brand:** douk audio
**Price:** C$19286
**Availability:** ✅ In Stock

## Summary

> 🎛️ Elevate your audio game with vintage warmth and modern precision!

## Quick Answers

- **What is this?** Douk Audio Balanced EQ Preamp: 7 Band Equalizer - XLR Vacuum Tube Preamp with RCA Input & Output - For Home Stereo HiFi Systems, Amplifiers, Active Speaker (T8 PRO Black) by douk audio
- **How much does it cost?** C$19286 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/733647718-douk-audio-balanced-eq-preamp-7-band-equalizer-xlr-vacuum)

## 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

- • **Noise? What Noise?:** Balanced XLR and RCA inputs/outputs eliminate interference for pristine, studio-grade sound.
- • **Vintage Vibes, Modern Flex:** Plug-and-play vacuum tubes (6H1N-BN, ECC85, 6SN7GT) let you customize your tonal signature effortlessly.
- • **Seamless Studio & Home Setup:** Simultaneous RCA/XLR outputs and channel switching simplify integration with amps and active speakers.
- • **Tailor Your Sound Like a Pro:** 7-band equalizer fine-tunes every frequency for flawless audio clarity and speaker correction.
- • **Sleek, Durable, and Eye-Catching:** Compact aluminum chassis with EMI shielding and warm tube glow blends style with silent performance.

## Overview

The Douk Audio T8 PRO is a professional-grade 7-band balanced EQ preamp featuring dual XLR/RCA inputs and outputs for interference-free signal transmission. Its upgradable vacuum tube design delivers warm, analog HiFi sound with customizable tonal options. Compact and stylish, it fits perfectly in any home stereo or studio setup, offering precise frequency control from 50Hz to 16KHz and flexible connectivity for amplifiers and active speakers.

## Description

Warm prompt: 1. Two outputs (RCA / XLR) work simultaneously. 2. If the scale line of the frequency knob points to the center, this frequency band is not weak or enhanced. Rotate it to the center position for a sense of pause. 3. The default 6H1N-BN tube can be modified to the following models: ECC85 / 6SN7GT / 6N1 / 6AQ8, 6SN7GT requires 6SN7 - 6N1 socket adapter. Parameters Model: Douk Audio T8 PRO Audio Input: Single End RCA / Balanced XLR Audio Output: Single End RCA/Balanced XLR Frequency response: 20Hz-20KHz (±1dB) Frequency Range: 50Hz/125Hz/315Hz/750Hz/2KHz/6KHz/16KHz. RCA Input Sensitivity: 0.775Vrms RCA output level: 1.2Vrms BAL Input Sensitivity: 1.5Vrms BAL output level: 2.4Vrms THD: 0.01% SNR: ≥98dB Operating voltage: DC12V (≥2A) Dimensions (W x D x H): 186*128*38mm / 7.32*5.04*1.50inch Package Dimensions (W x D x H): 340*240*70mm / 13.39*9.45*2.86in Net Weight: 685g / 1.51lb Package weight: 1.1kg / 2.43lb Packing List 1 x T8 Preamp 2 x 6H1N-BN Tubes 1 x DC 12V Power Adapter 1 x User Manual

Review: イージーリスニングな音にしてくれる - 非desertcartのECで購入。（取扱ショップはNob sound） すごく懐かしい感じの音です。 ハッキリ言うとDAC→パワーアンプセクションの直結に比べると解像感そのものは下がる。 でもアナログ時代の聴き心地を提供してくれます。 音の密度は増しバスドラムから本来出している低音がドスドス迫ってくるような音像。 耳に刺さる音のカドが取れ、弾力を感じる。 真空管プリの中には定位感を変えてしまうような物があると思いますがそういう野暮さは見えず、EQの効きもほどほどで極端なセッティングをしても音源の持ち味が損なわれるには至らない。 真空管アンプですがこれといってハムノイズ等の弊害は無し。とはいえ個体差がある可能性は否めず。 耐久性については到着直後なのでわかりません。 何時間でも鳴らしっぱなしにしてしまいそうな心地良さがあります。

## Features

- Professional 7-band equalizer (50Hz-16KHz) accurately adjusts high/middle/low to compensate for speaker defects, optimize any audio source and provide a custom audio fan-grade acoustic profile
- Dual XLR/RCA inputs and outputs have balanced signal transmission to eliminate interference noise, and independent channel balanced controls ensure accurate stereo imaging
- Upgradable 6H1N-BN vacuum tubing produces a warm HiFi analog sound signature. Plugable socket supports ECC85/6SN7GT tubing to allow personalized tonal engraving
- CH1/CH2 input switching & simultaneous RCA/XLR output modes allow for flexible connections with amplifier/active speakers and simplifies studio-grade setup
- Compact aluminum chassis with EMI shield iron plate fits seamlessly on your desktop and features vintage tube glow with both aesthetic appeal and noise-free performance

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C5MHZ68Y |
| Amazon Bestseller | #447,918 in Electronics ( See Top 100 in Electronics ) #212 in Audio Component Preamplifiers |
| Amplifier Type | Tube |
| Audio Output Mode | RCA, XLR |
| Brand | Douk Audio |
| Built-In Media | 1 x DC 12V Power Adapter, 1 x T8PRO Preamp, 1 x User Manual, 6H1N-BN tube x 2 |
| Color | T8 PRO |
| Compatible Devices | Active Speaker, Amplifier, CD Player, PC, TV |
| Connector Type | RCA, XLR |
| Customer Reviews | 4.0 out of 5 stars 115 Your Review |
| Enclosure Material | Metal |
| Item Dimensions D x W x H | 12.8D x 18.6W x 3.8H cm |
| Item Weight | 685 g |
| Manufacturer | Douk Audio |
| Material | Metal |
| Mfr Part Number | SUC-T8-PRO-H |
| Model Name | SUC-T8-PRO-H |
| Model Number | SUC-T8-PRO-H |
| Number of Bands | 7 |
| Output Channel Quantity | 2 |
| Power Source | DC Power Supply |
| Product Dimensions | 12.8D x 18.6W x 3.8H cm |
| Sound Profile | Worm, Analog |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Douk Audio
- **Color:** T8 PRO
- **Compatible Devices:** Active Speaker, Amplifier, CD Player, PC, TV
- **Material:** Metal
- **Product Dimensions:** 12.8D x 18.6W x 3.8H cm

## Images

![Douk Audio Balanced EQ Preamp: 7 Band Equalizer - XLR Vacuum Tube Preamp with RCA Input & Output - For Home Stereo HiFi Systems, Amplifiers, Active Speaker (T8 PRO Black) - Image 1](https://m.media-amazon.com/images/I/61SDdLzqxCL.jpg)
![Douk Audio Balanced EQ Preamp: 7 Band Equalizer - XLR Vacuum Tube Preamp with RCA Input & Output - For Home Stereo HiFi Systems, Amplifiers, Active Speaker (T8 PRO Black) - Image 2](https://m.media-amazon.com/images/I/71JPNHSNnGL.jpg)
![Douk Audio Balanced EQ Preamp: 7 Band Equalizer - XLR Vacuum Tube Preamp with RCA Input & Output - For Home Stereo HiFi Systems, Amplifiers, Active Speaker (T8 PRO Black) - Image 3](https://m.media-amazon.com/images/I/71S2e004ScL.jpg)
![Douk Audio Balanced EQ Preamp: 7 Band Equalizer - XLR Vacuum Tube Preamp with RCA Input & Output - For Home Stereo HiFi Systems, Amplifiers, Active Speaker (T8 PRO Black) - Image 4](https://m.media-amazon.com/images/I/718XdPG6mqL.jpg)
![Douk Audio Balanced EQ Preamp: 7 Band Equalizer - XLR Vacuum Tube Preamp with RCA Input & Output - For Home Stereo HiFi Systems, Amplifiers, Active Speaker (T8 PRO Black) - Image 5](https://m.media-amazon.com/images/I/71e2vpPEpqL.jpg)

## Questions & Answers

**Q: What does this device do?**
A: T8 can compensate for the defects of speakers and sound field by adjusting 7-band high, middle and low frequencies, and modify various sound sources. The timbre and loudness also can be changed to achieve different sound effects.

**Q: Can I use RCA and XLR outputs simultaneously?​​**
A: Yes! Both outputs work concurrently - connect XLR to studio monitors and RCA to a subwoofer simultaneously. Ideal for multi-amp setups without signal degradation. Perfect for A/B testing or expanding your audio chain.

**Q: How do I reset EQ frequencies to neutral?​**
A: Rotate any band's knob until you feel a tactile pause at the center position (scale line vertical). This zero point means no boost/cut applied. Reset all knobs to center for flat reference response.

**Q: What tubes can I upgrade to?**
A: Stock 6H1N-BN tubes support direct swaps with 6N1/6AQ8/ECC85. For 6SN7GT tubes, you MUST use a 6SN7-to-6N1 adapter (not included). Adapter ensures proper pin alignment and voltage safety.

## Customer Reviews

### ⭐⭐⭐⭐⭐ イージーリスニングな音にしてくれる
*by バ***作 on December 9, 2024*

非AmazonのECで購入。（取扱ショップはNob sound） すごく懐かしい感じの音です。 ハッキリ言うとDAC→パワーアンプセクションの直結に比べると解像感そのものは下がる。 でもアナログ時代の聴き心地を提供してくれます。 音の密度は増しバスドラムから本来出している低音がドスドス迫ってくるような音像。 耳に刺さる音のカドが取れ、弾力を感じる。 真空管プリの中には定位感を変えてしまうような物があると思いますがそういう野暮さは見えず、EQの効きもほどほどで極端なセッティングをしても音源の持ち味が損なわれるには至らない。 真空管アンプですがこれといってハムノイズ等の弊害は無し。とはいえ個体差がある可能性は否めず。 耐久性については到着直後なのでわかりません。 何時間でも鳴らしっぱなしにしてしまいそうな心地良さがあります。

## Frequently Bought Together

- Douk Audio HiFi Vacuum Tube 7-Band EQ Preamp Equalizer XLR Pre-Amplifier Home (T8 PRO)
- Monoprice 1.5ft Premium 2 RCA Plug/2 RCA Plug M/M 22AWG Cable - Black
- Tan QY 2RCA to 2RCA Cable 3Ft, Gold-Plated 2 RCA Male to 2 RCA Male Stereo Audio Cable for Home Theater, HDTV, Gaming Consoles, Hi-Fi Systems (3Ft/1M)

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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-04-23*