Gustard Audalytic HP70 User Manual

1. Introducció

Thank you for choosing the Gustard Audalytic HP70. This device is a high-performance, fully balanced discrete headphone amplifier and pure preamplifier designed to deliver exceptional audio fidelity. It features a Class A amplificació stage, advanced volume control, and versatile input/output options for a superior listening experience. This manual provides detailed instructions for setup, operation, and maintenance to ensure optimal performance and longevity of your HP70.

Figura 1: Frontal view of the Gustard Audalytic HP70 in silver.

2. Producte acabatview

2.1 Tauler frontal

The front panel of the HP70 features essential controls and headphone outputs for easy access and operation.

Figura 2: Detallada view of the HP70 front panel.

• Botó d'encesa: S'utilitza per encendre o apagar la unitat.
• Pom de volum: Controls the output volume. This is an R-2R relay volume control for precise, lossless adjustment.
• 6.35mm Single-Ended Headphone Output: Standard headphone jack for single-ended headphones.
• 4.4mm Balanced (TRS) Headphone Output: Balanced headphone jack for compatible headphones.

2.2 Panell posterior

The rear panel provides all input and output connections for integrating the HP70 into your audio system.

Figure 3: Rear panel connections of the HP70.

• AC Input 115V/230V: Entrada d'alimentació per al dispositiu.
• Fusible: User-replaceable fuse for power protection.
• DC Power Input (12V-18V): Alternative DC power input.
• LAN Input: Per a la connectivitat de xarxa.
• Entrada USB: For connecting to a computer or other digital source.
• Entrada òptica: Entrada d'àudio òptic digital.
• Coaxial Input 1 & 2: Digital coaxial audio inputs.
• RCA Inputs (L/R): Analog RCA stereo inputs.
• XLR Inputs (L/R): Balanced analog XLR stereo inputs.
• Balanced Output XLR (L/R): Balanced analog XLR stereo outputs for preampfunció de lifier.
• Single-Ended Output RCA (L/R): Analog RCA stereo outputs for preampfunció de lifier.
• Antena Bluetooth: For wireless audio reception.
• Ranura per a targetes TF: For local media playback (if supported by firmware).

2.3 Components interns

The HP70 features a meticulously designed internal layout, showcasing its fully balanced discrete Class A amplifier architecture and multi-stage voltagregulació.

Figura 4: Intern view highlighting the discrete Class A ampmés viutage with power transistors.

Figura 5: Intern view detailing the input stage and built-in low-noise power supply.

3. Configuració

3.1 Desembalatge

Carefully remove the HP70 and its accessories from the packaging. Ensure all items are present:

• Gustard Audalytic HP70 unit (x1)
• Comandament a distància (x1)
• Manual d'usuari (x1)
• Cable d'alimentació
• Antena Bluetooth

3.2 Connexió d'alimentació

1. Ensure the HP70 is placed on a stable, level surface with adequate ventilation.
2. Connect the provided power cable to the AC input on the rear panel of the HP70.
3. Plug the other end of the power cable into a suitable AC power outlet (115V/230V, 50/60Hz).
4. Alternatively, a 12V-18V DC power supply can be used with the DC power input.

3.3 Connexions d'àudio

Connect your audio sources and output devices to the HP70 using appropriate cables.

• Fonts d'entrada: Connect your digital sources (e.g., CD player, streamer, computer) to the USB, Optical, or Coaxial inputs. Connect analog sources (e.g., turntable preamplifier, DAC) to the RCA or XLR analog inputs.
• Output Devices (Preamplifier Mode): For connecting to a power amplifier or active speakers, use the Balanced XLR or Single-Ended RCA outputs on the rear panel.
• Auriculars: Connect your headphones to either the 6.35mm single-ended or 4.4mm balanced (TRS) output on the front panel.
• Antena Bluetooth: Screw the provided Bluetooth antenna onto its connector on the rear panel for wireless connectivity.

4. Instruccions de funcionament

4.1 Encès/Apagat

Press the power button on the front panel to turn the HP70 on or off. The unit will typically display its status or volume level when powered on.

4.2 Control de volum

Rotate the large knob on the front panel clockwise to increase volume and counter-clockwise to decrease it. The HP70 uses an R-2R relay volume control for precise, lossless adjustment and excellent channel matching.

4.3 Selecció d'entrada

Use the remote control or a dedicated button (if available on the front panel, refer to specific model display) to cycle through the available input sources (USB, Optical, Coaxial 1, Coaxial 2, RCA, XLR, Bluetooth, TF Card).

4.4 PreampMode lifier

The HP70 can function as a dedicated pure preamplifier. In this mode, the post-amplificació stage (headphone amplifier) can be disabled. This allows for seamless switching between headphone and speaker listening without needing to disconnect headphones. Refer to the on-screen menu or remote control for options to enable/disable the headphone amplifier section when using the XLR or RCA line outputs.

4.5 Auriculars AmpMode lifier

When headphones are connected to the front panel outputs, the HP70 operates as a powerful headphone amplifier. Ensure the volume is set to a low level before playing audio to protect your hearing.

4.6 Control remot

The included remote control provides convenient access to power, volume, input selection, and other settings. Familiarize yourself with the remote's buttons for full control over the HP70's functions.

5. Característiques clau

• Fully Balanced Discrete Class A Ampmés viu: Utilizes 4 pairs of power transistors for ample driving power and superior control. Discrete components allow for precise fine-tuning and enhanced development potential, offering a wider range of sonic characteristics. The post-amplificació stage can be disabled for pure preampoperació de lifier.
• Preamplifier with Socketed Op-Amps: La preamp section uses two socketed LME49720 dual op-amps. El preamp output can be disabled for seamless switching between headphone and speaker outputs.
• Fully Balanced Input Stage: Features a single-ended to balanced conversion circuit, allowing RCA inputs to benefit from full balanced drive performance.
• Multi-stage Voltage Reglament: Designed with multiple stages del voltage regulation to achieve lower ripple noise and reduced interference, resulting in cleaner audio reproduction.
• R-2R Relay Volume Control: Provides lossless precision adjustment with guaranteed channel matching across all 4 audio paths.

6. Especificacions

6.1 General

• Marca: Fanmusic (Gustard Audalytic)
• Model: HP70
• Color: Plata
• Font d'alimentació: AC 115V/230V, 50/60Hz or DC 12V-18V
• Consum d'energia: <15W
• Dimensions (AxPxA): 220 x 170 x 50 mm (excluding protrusions)
• Pes net: 1.6 kg
• Tecnologia de connectivitat: RCA, XLR, USB, Optical, Coaxial, Bluetooth, LAN
• Tipus de controlador: Control remot
• Dispositius compatibles: Speaker, Tablet, Personal Computer, Smartphone, Ampmés viu, auriculars
• Mode de sortida d'àudio: Stereo, Surround (5.1 channel configuration)

Figure 6: Dimensions of the Gustard Audalytic HP70.

6.2 Preamplifier Analog Output (Rear XLR)

• Resposta de freqüència: 20 Hz-40 kHz (± 0.1 dB)
• Ràtio senyal / soroll: 122 dB
• Canal Crosstalk: <-120dB @ 1kHz
• THD+N: <0.0004%
• IMD: <0.0004%

6.3 Auriculars Amplifier Output (6.35mm Single-Ended / 4.4mm Balanced)

• Output Impedance (6.35mm): 0.1Ω
• Output Impedance (4.4mm Balanced): 0.2Ω
• Resposta de freqüència: 20 Hz-40 kHz (± 0.1 dB)
• Ràtio senyal / soroll: > 120 dB
• Canal Crosstalk: -118 dB a 1 kHz
• THD+N: <0.0005% (1kHz, 1000mW into 32Ω)
• IMD: <0.0005% (1000mW into 32Ω)
• Maximum Output Power (Clipping): ≈2000mW (32Ω, balanced)

6.4 entrades digitals

• RCA Inputs (2 sets): Input Sensitivity: Typical 2Vrms, Maximum 3Vrms; Input Impedance: 20kΩ
• XLR Balanced Input (1 set): Input Sensitivity: Typical +15dBu (5V), Maximum +18dBu (6V); Input Impedance: 10kΩ

7. Manteniment

To ensure the longevity and optimal performance of your Gustard Audalytic HP70, follow these maintenance guidelines:

• Neteja: Use a soft, dry cloth to wipe the exterior of the unit. Avoid using liquid cleaners, aerosols, or solvents, as these may damage the finish or internal components.
• Ventilació: Ensure the unit has adequate ventilation. Do not block the ventilation openings. Avoid placing the unit in enclosed spaces or on soft surfaces that may impede airflow.
• Medi ambient: Operate the HP70 in a clean, dry environment, away from direct sunlight, heat sources, excessive dust, and moisture.
• Apagueu quan no estigui en ús: If the unit will not be used for an extended period, it is recommended to power it off and disconnect it from the power outlet.

8. Solució De Problemes

If you encounter issues with your HP70, refer to the following common troubleshooting steps:

• Sense energia:
  • Comproveu si el cable d'alimentació està connectat correctament tant a la unitat com a la presa de corrent.
  • Comproveu que la presa de corrent funcioni.
  • Comproveu el fusible del panell posterior. Si està fundit, substituïu-lo per un fusible del mateix tipus i amperatge.
• Sense so:
  • Assegureu-vos que s'ha seleccionat la font d'entrada correcta.
  • Check all audio cable connections (inputs and outputs) for secure fit.
  • Increase the volume level on the HP70 and your source device.
  • If using preamplifier outputs, ensure your 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.
• So distorsionat:
  • Check if the input signal level is too high, causing clipping. Reduce the output volume from your source device.
  • Assegureu-vos que tots els cables estiguin en bon estat i connectats correctament.
  • Test with a different audio source or headphones/speakers to isolate the issue.
• El control remot no funciona:
  • Reviseu i substituïu les piles del comandament a distància.
  • Ensure there are no obstructions between the remote and the HP70's IR receiver.

Si el problema persisteix després d'intentar aquests passos, poseu-vos en contacte amb l'atenció al client.

9. Garantia i Suport

9.1 Informació de la garantia

The Gustard Audalytic HP70 comes with a 1 any de garantia from the date of purchase, covering manufacturing defects. This warranty does not cover damage caused by misuse, accidents, unauthorized modifications, or normal wear and tear. Please retain your proof of purchase for warranty claims.

9.2 Atenció al client

For technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact the seller or authorized distributor. For products purchased via Amazon, the seller is SHENZHENAUDIO. Please refer to your purchase documentation for specific contact details.