Douk Audio T3 PRO Vacuum Tube Phono Preamp Manual d'usuari

1. Introducció

The Douk Audio T3 PRO is a high-quality vacuum tube phono preamplifier designed to enhance your audio experience. It serves as both an MM phono preamp for turntables and a versatile tube preamp for various audio sources, delivering warm, dynamic, and sweet sound. This manual provides detailed instructions for setup, operation, maintenance, and troubleshooting to ensure optimal performance and longevity of your device.

Figure 1.1: Douk Audio T3 PRO Vacuum Tube Phono Preamp

2. Característiques

• Dual Input Capability: Features MM signal input for turntables and a 3.5mm AUX input (with priority) for other audio devices like phones, TVs, MP3 players, CD players, DACs, and computers.
• Vacuum Tube Sound: Equipped with two 6A2 vacuum tubes (replaceable with 6K4 / 6J1 / 6J4 / GE5654 / 6AK5 / 6*1n) to produce a warm, dynamic, and sweet audio signature.
• Adjustable Gain: Includes a gain adjustment switch (OFF-39dB-42dB-45dB) to match various audio signal levels effectively.
• Construcció d'alta qualitat: Built with an aluminum alloy chassis for superior shielding and gold-plated terminals for lossless signal transmission.
• Disseny compacte i elegant: Mini size with an exquisite appearance, featuring a front panel machined with wire drawing and frosted technology for a modern look.
• Optimized Circuitry: Designed with a reasonable circuit layout and concise wiring to ensure clear sound with minimal noise.

3. Contingut del paquet

Si us plau, comproveu el contingut del paquet en desembalar-lo per assegurar-vos que hi hagi tots els elements:

• 1x Douk Audio T3 PRO MM Phono Preamp
• 1 x manual d'instruccions
• 1x adaptador de corrent (DC 12V)
• 2x 6A2 Vacuum Tubes
• 1x Cable RCA

Figure 3.1: Included accessories and dimensions

4. Producte acabatview

4.1 Tauler frontal

Figure 4.1: Front panel layout with AUX input and gain switch

• IN (3.5mm AUX Input): Connect audio sources such as smartphones, MP3 players, TVs, CD players, DACs, or computers. This input has priority over the MM Input.
• T3 PRO Logo: Indicates the product model.
• Gain Adjustment Switch: A rotary knob with settings for OFF, 39dB, 42dB, and 45dB. This controls the amplification level of the preamp.

4.2 Panell posterior

Figure 4.2: Rear panel layout with connections

• CC 12V: Power input jack. Connect the provided 12V DC power adapter here.
• AUDIO OUTPUT (RCA L/R): Connecta't al teu amplifier, active speakers, or receiver using RCA cables.
• MM INPUT (RCA L/R): Connect your MM (Moving Magnet) turntable here using RCA cables.
• GND (Ground Terminal): Connect the ground wire from your turntable to this terminal to reduce hum and noise.

5. Configuració

Follow these steps to set up your Douk Audio T3 PRO Phono Preamp:

1. Instal·leu els tubs de buit: Carefully insert the two provided 6A2 vacuum tubes into their respective sockets on the top of the unit. Ensure they are seated firmly.
2. Connecta el tocadiscs: Connect the RCA output cables from your MM turntable to the MM INPUT (RCA L/R) jacks on the rear panel of the T3 PRO.
3. Connecteu el cable de terra: Attach the ground wire from your turntable to the GND terminal on the rear panel of the T3 PRO. This is crucial for minimizing hum.
4. Connecta't a Amplificador/Oradors: Connecteu el AUDIO OUTPUT (RCA L/R) jacks on the rear panel of the T3 PRO to an available line-level input (e.g., AUX, CD, Tuner) on your amplifier, receiver, or directly to active speakers using RCA cables.
5. Connectar l'alimentació: Plug the provided 12V DC power adapter into the DC 12V input on the rear panel, then plug the adapter into a wall outlet.
6. Optional AUX Input: If you wish to use the 3.5mm AUX input, connect your audio source (e.g., phone, MP3 player) to the IN (3.5mm AUX Input) jack on the front panel. Note that this input takes priority over the MM Input when a cable is connected.

Figura 5.1: Example setup with turntable and speakers

6. Instruccions de funcionament

Once the T3 PRO is set up, follow these steps for operation:

1. Encès: Turn the gain adjustment switch on the front panel from the 'OFF' position to your desired gain setting (39dB, 42dB, or 45dB). The vacuum tubes will illuminate, indicating the unit is powered on.
2. Seleccioneu l'entrada:
   • If using a turntable, ensure no cable is plugged into the front 3.5mm AUX input. The unit will automatically use the MM Input.
   • If using the 3.5mm AUX input, simply plug in your audio source. The AUX input has priority and will override the MM Input.
3. Ajust de guany: Select the appropriate gain setting (39dB, 42dB, or 45dB) based on your turntable's output and your amplifier's input sensitivity. Start with 39dB and increase if the volume is too low or if you experience distortion at higher settings.
4. Reproduir àudio: Start playing your record or audio source. Adjust the volume on your connected amplifier o altaveus actius.

Figure 6.1: Gain adjustment switch on the front panel

7. Manteniment

Proper maintenance ensures the longevity and performance of your T3 PRO:

• Neteja: Feu servir un drap suau i sec per netejar l'exterior de la unitat. Eviteu utilitzar netejadors líquids o materials abrasius.
• Substitució del tub: The 6A2 vacuum tubes have a finite lifespan. If you notice a degradation in sound quality or tube failure, they can be replaced. Compatible tube models include 6K4, 6J1, 6J4, GE5654, 6AK5, and 6*1n. Ensure the unit is powered off and unplugged before attempting tube replacement. Allow tubes to cool down before handling.
• Ventilació: Ensure the unit is placed in a well-ventilated area to prevent overheating, especially during extended use.
• Emmagatzematge: Quan no l'utilitzeu durant períodes prolongats, guardeu la unitat en un lloc fresc i sec, allunyat de la llum solar directa i de temperatures extremes.

Figure 7.1: The two vacuum tubes on the T3 PRO

8. Solució De Problemes

If you encounter issues with your T3 PRO, refer to the following common problems and solutions:

If the problem persists after trying these solutions, please contact Douk Audio customer support for further assistance.

9. Especificacions

10. Garantia i Suport

Douk Audio products are designed for reliability and performance. For warranty information and technical support, please refer to the warranty card included in your package or visit the official Douk Audio weblloc web. Conserveu el rebut de compra com a comprovant de compra per a qualsevol reclamació de garantia.