--- product_id: 540830270 title: "Douk Audio Balanced EQ Preamp: 7-Band Equalizer - Vacuum Tube Preamplifier with XLR RCA Inputs & Outputs - for Home Stereo HiFi System, Amplifiers, Active Speakers (T8 PRO Black)" price: "7754156₫" currency: VND in_stock: true url: https://www.desertcart.vn/products/540830270-douk-audio-balanced-eq-preamp-7-band-equalizer-vacuum-tube store_origin: VN region: Vietnam --- # Upgradable vacuum tubes Dual XLR/RCA balanced I/O 7-band EQ (50Hz-16KHz) Douk Audio Balanced EQ Preamp: 7-Band Equalizer - Vacuum Tube Preamplifier with XLR RCA Inputs & Outputs - for Home Stereo HiFi System, Amplifiers, Active Speakers (T8 PRO Black) **Price:** 7754156₫ **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 - Vacuum Tube Preamplifier with XLR RCA Inputs & Outputs - for Home Stereo HiFi System, Amplifiers, Active Speakers (T8 PRO Black) - **How much does it cost?** 7754156₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/540830270-douk-audio-balanced-eq-preamp-7-band-equalizer-vacuum-tube) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision 7-Band EQ Control:** Tailor your sound with surgical frequency adjustments from deep bass to crisp highs. - • **Warm Analog Vacuum Tube Tone:** Customize your sonic signature with upgradable 6H1N-BN tubes and optional ECC85/6SN7GT swaps. - • **Balanced XLR & RCA Connectivity:** Experience interference-free audio with professional-grade balanced inputs and outputs. - • **Flexible Channel & Output Modes:** Seamlessly switch inputs and output simultaneously to multiple devices for studio-level versatility. - • **Sleek EMI-Shielded Aluminum Chassis:** Compact, noise-free design with vintage tube glow adds a premium aesthetic to your desktop setup. ## Overview The Douk Audio T8 PRO Black is a professional 7-band vacuum tube preamplifier featuring balanced XLR and RCA inputs/outputs, precise frequency control from 50Hz to 16KHz, and upgradable tubes for customizable analog warmth. Its compact, EMI-shielded aluminum chassis with vintage tube glow ensures interference-free, audiophile-grade sound tailored for home stereo, amplifiers, and active speakers. ## Description Buy Douk Audio Balanced EQ Preamp: 7-Band Equalizer - Vacuum Tube Preamplifier with XLR RCA Inputs & Outputs - for Home Stereo HiFi System, Amplifiers, Active Speakers (T8 PRO Black): Equalizers & Feedback Controllers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases ## Features - Professional 7-band equalizer (50Hz-16KHz) precisely adjusts highs/mids/lows to compensate speaker defects & optimize any sound source, delivering custom audiophile-grade acoustic profiles. - Dual XLR/RCA inputs & outputs with balanced signal transmission eliminate interference noise, while independent channel balance control ensures accurate stereo imaging. - Upgradable 6H1N-BN vacuum tubes generate warm HiFi analog sound signature; pluggable sockets support ECC85/6SN7GT tubes for personalized timbre sculpting. - CH1/CH2 input switching & simultaneous RCA/XLR output modes enable flexible connectivity with amplifiers/active speakers, simplifying studio-grade setups. - Compact aluminum chassis with EMI-shielding iron plate fits desktops seamlessly, featuring vintage tube glow for both aesthetic appeal and noise-free performance. ## Technical Specifications | Specification | Value | |---------------|-------| | Best Sellers Rank | #38,282 in Musical Instruments ( See Top 100 in Musical Instruments ) #65 in Equalizers & Feedback Controllers | | Customer Reviews | 4.0 out of 5 stars 131 Reviews | ## Product Details - **Brand:** Douk Audio - **Color:** Black - **Compatible Devices:** Active Speakers, Amplifier, CD Player, PC, TV - **Material:** Metal - **Product Dimensions:** 5.04"D x 7.32"W x 1.5"H ## Images ![Douk Audio Balanced EQ Preamp: 7-Band Equalizer - Vacuum Tube Preamplifier with XLR RCA Inputs & Outputs - for Home Stereo HiFi System, Amplifiers, Active Speakers (T8 PRO Black) - Image 1](https://m.media-amazon.com/images/I/61QYkRhiqbL.jpg) ![Douk Audio Balanced EQ Preamp: 7-Band Equalizer - Vacuum Tube Preamplifier with XLR RCA Inputs & Outputs - for Home Stereo HiFi System, Amplifiers, Active Speakers (T8 PRO Black) - Image 2](https://m.media-amazon.com/images/I/81maTXUPfTL.jpg) ![Douk Audio Balanced EQ Preamp: 7-Band Equalizer - Vacuum Tube Preamplifier with XLR RCA Inputs & Outputs - for Home Stereo HiFi System, Amplifiers, Active Speakers (T8 PRO Black) - Image 3](https://m.media-amazon.com/images/I/71nU2wXo0fL.jpg) ![Douk Audio Balanced EQ Preamp: 7-Band Equalizer - Vacuum Tube Preamplifier with XLR RCA Inputs & Outputs - for Home Stereo HiFi System, Amplifiers, Active Speakers (T8 PRO Black) - Image 4](https://m.media-amazon.com/images/I/71ANic8iJYL.jpg) ![Douk Audio Balanced EQ Preamp: 7-Band Equalizer - Vacuum Tube Preamplifier with XLR RCA Inputs & Outputs - for Home Stereo HiFi System, Amplifiers, Active Speakers (T8 PRO Black) - Image 5](https://m.media-amazon.com/images/I/716vAFKNqbL.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. ## 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) --- ## 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.vn/products/540830270-douk-audio-balanced-eq-preamp-7-band-equalizer-vacuum-tube](https://www.desertcart.vn/products/540830270-douk-audio-balanced-eq-preamp-7-band-equalizer-vacuum-tube) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-09-16*