AOSHIDA Gustard H26 Discrete Class A Headphone AmpManyèl itilizatè lifier

1. Entwodiksyon

The Gustard H26 is a high-performance discrete Class A headphone amplifier ak preamplifier designed for audiophiles. It features a fully balanced circuit design, robust power delivery, and versatile input/output options for an exceptional audio experience. This manual provides detailed instructions for setting up, operating, and maintaining your H26 amplifier.

Figi 1.1: Devan view of the Gustard H26 headphone amplaviyè, montreasing its sleek black design with a central volume knob and headphone jacks.

2. Pwodwi Features

• Fully Balanced Discrete Class A Amplifier: Utilizes 8 pairs of power transistors for sufficient drive and control, ensuring high-fidelity audio reproduction.
• Versatile Headphone Connectivity: Equipped with 6.35mm unbalanced, 4.4mm balanced, and 4-pin XLR balanced headphone outputs.
• Precision Volume Control: Features a matrix relay volume system, ensuring consistent 4-way volume adjustment without distortion or bias.
• Dual Toroidal Transformers: Incorporates two custom 50W audio-specific toroidal transformers, one for each channel, to prevent interference and provide stable power.
• High-Performance Preamplifier: Pre laamplifier stage uses two direct-inserted LME49720 dual op-amps for clear signal processing.
• Mòd Sòti Fleksib: Ekoutè a amplifier power can be switched off separately, allowing the H26 to function as a pure preamplifier output. Preamplifier outputs can also be deactivated for easy switching between headphone and speaker listening.

Figi 2.1: Entèn view of the Gustard H26, highlighting the eight pairs of power transistors used in its fully balanced discrete Class A ampkonsepsyon lifier.

Figi 2.2: Close-up of the two 50W audio-specific custom toroidal transformers inside the Gustard H26, designed to prevent channel interference.

Figi 2.3: Entèn view illustrating the matrix relay volume control and the LME49720 dual op-amps used in the preamplifier stage of the Gustard H26.

3. Enstalasyon

3.1 Debake

Carefully remove the Gustard H26 from its packaging. Inspect the unit for any signs of damage during transit. Retain the packaging for future transport or storage.

3.2 Konekte Aparèy ou yo

Refer to the diagram below for a clear understanding of the rear panel connections. Ensure all connections are secure before powering on the device.

Figi 3.1: Detailed diagram of the Gustard H26 rear panel, showing all input and output ports, power connections, and controls.

• Koneksyon Antre:
  • RCA Input (x1): Connect your single-ended audio source (e.g., DAC, CD player) to the RCA input jacks (Right/Left).
  • XLR Input (x2): Connect your balanced audio sources to the XLR input jacks. The H26 provides two sets of balanced XLR inputs (XLR1 and XLR2).
• Preamplifier Output Connections:
  • RCA PreampSòti lifier: Konekte ak pouvwa ou amplifier or active speakers using RCA cables.
  • XLR PreampSòti lifier: Connect to your balanced power amplifier or active speakers using XLR cables.
• Koneksyon pouvwa:
  • AC pouvwa Antre: Connect the provided power cable to the AC input.
  • Voltage Seleksyon: Asire voltagse switch selektè mete vol ki kòrèk latage pou rejyon ou an (100-120V oubyen 220-240V). Incorrect voltagSeleksyon e ka domaje inite a.
  • Pouvwa switch: Use this to turn the unit on or off.
  • fuse: The fuse holder is integrated into the AC input for protection.

3.3 Premye pouvwa sou

After all connections are made and the voltage is correctly selected, press the power switch on the rear panel to turn on the H26. The front panel display will illuminate.

4. Operasyon Enstriksyon

4.1 Kontwòl Volim

The H26 features a precise matrix relay volume control. Rotate the large knob on the front panel clockwise to increase volume and counter-clockwise to decrease it. The current volume level will be displayed on the front panel.

4.2 Seleksyon Antre

Use the input selector button (typically on the front panel, refer to the device for exact location) to cycle through the available RCA and XLR inputs. The selected input will be indicated on the display.

4.3 Headphone Output Usage

Connect your headphones to one of the three front panel jacks: 6.35mm (unbalanced), 4.4mm (balanced), or 4-pin XLR (balanced). Ensure your headphones are compatible with the selected output type. The H26 can drive a wide range of headphones.

4.4 Preamplifier Functionality

The H26 can function as a dedicated preamplifier. To use it as a pure preamplifier, you can switch off the headphone amplifier power separately. Consult the front panel controls or menu options (if available) for this setting. This ensures that only the preamplifier section is active, optimizing performance for connected power amplifiers oswa moun ki pale aktif.

Figi 4.1: The Gustard H26 integrated into a home audio system, demonstrating its use with a remote control for convenient operation.

5. Antretyen

5.1 Netwayaj

To clean the exterior of the H26, use a soft, dry, lint-free cloth. Do not use abrasive cleaners, solvents, or chemical sprays, as these can damage the finish. Ensure the unit is powered off and unplugged before cleaning.

5.2 Konsiderasyon Anviwònman

Place the H26 in a well-ventilated area to prevent overheating, especially given its Class A operation. Avoid direct sunlight, heat sources, and areas with high humidity or dust. Do not block the ventilation openings.

NAN. Depanaj

If you encounter issues with your Gustard H26, please refer to the following common troubleshooting steps:

• Pa gen pouvwa:
  • Check if the power cable is securely connected to both the H26 and the wall outlet.
  • Verifye ke switch pouvwa a sou panèl dèyè a nan pozisyon 'ON'.
  • Asire voltage selector switch is set correctly for your region.
  • Check the fuse in the AC input. If blown, replace it with a fuse of the same type and rating.
• Pa gen son:
  • Confirm that the correct input source is selected on the H26.
  • Check all audio cables (RCA, XLR, headphone) for secure connections.
  • Ensure the volume level is not set to minimum or muted.
  • If using as a preamplifier, ensure the connected power amplifier or active speakers are powered on and functioning correctly.
  • If using headphones, ensure they are properly plugged into the correct jack and are functional.
• Son oswa bri defòme:
  • Tcheke pou fil odyo ki lach oswa ki domaje.
  • Ensure the input source is not sending an excessively strong signal that could cause clipping.
  • Verify that the H26 is placed away from potential sources of electromagnetic interference (e.g., Wi-Fi routers, mobile phones).
  • If using balanced connections, ensure both ends are properly balanced.

7. Espesifikasyon

The following table details the technical specifications of the Gustard H26 Discrete Class A Headphone Amplifier:

Figi 7.1: Official technical specifications table for the Gustard H26, detailing input, preamplifier, ak kas ekoutè amplifier performance metrics.

8. Garanti ak sipò

8.1 Enfòmasyon sou Garanti

The Gustard H26 is covered by a manufacturer's warranty against defects in materials and workmanship. The specific terms and duration of the warranty may vary by region and retailer. Please retain your proof of purchase for warranty claims. For detailed warranty information, refer to the documentation provided with your purchase or contact your retailer.

8.2 Sipò teknik

If you require technical assistance or have questions not covered in this manual, please contact your authorized AOSHIDA retailer or the manufacturer's support channels. When contacting support, please have your product model (H26) and purchase information readily available.