Gustard Audalytic HP70 User Manual

1. Introduktion

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 amplifikation 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.

Figur 1: Forside view of the Gustard Audalytic HP70 in silver.

2. Produktet er slutview

2.1 Frontpanel

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

Figur 2: Detaljeret view of the HP70 front panel.

• Power knap: Bruges til at tænde eller slukke for enheden.
• Lydstyrkeknap: 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 Bagpanel

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: Strømindgang til enheden.
• Sikring: User-replaceable fuse for power protection.
• DC Power Input (12V-18V): Alternativ DC-strømindgang.
• LAN-indgang: Til netværksforbindelse.
• USB-indgang: For connecting to a computer or other digital source.
• Optisk indgang: Digital optisk lydindgang.
• Coaxial Input 1 & 2: Digital coaxial audio inputs.
• RCA-indgange (V/H): Analog RCA stereo inputs.
• XLR Inputs (L/R): Balanced analog XLR stereo inputs.
• Balanced Output XLR (L/R): Balanced analog XLR stereo outputs for preamplifier funktion.
• Single-Ended Output RCA (L/R): Analog RCA stereo outputs for preamplifier funktion.
• Bluetooth-antenne: For wireless audio reception.
• TF-kortslot: For local media playback (if supported by firmware).

2.3 Interne komponenter

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

Figur 4: Intern view highlighting the discrete Class A amplivligere stage with power transistors.

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

3. Opsætning

3.1 Udpakning

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

• Gustard Audalytic HP70 unit (x1)
• Fjernbetjening (x1)
• Brugervejledning (x1)
• Strømkabel
• Bluetooth-antenne

3.2 Strømtilslutning

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 Lydforbindelser

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

• Inputkilder: 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.
• Hovedtelefoner: Connect your headphones to either the 6.35mm single-ended or 4.4mm balanced (TRS) output on the front panel.
• Bluetooth-antenne: Screw the provided Bluetooth antenna onto its connector on the rear panel for wireless connectivity.

4. Betjeningsvejledning

4.1 Tænd/sluk

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 Lydstyrkekontrol

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 Indgangsvalg

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 Præamplifier tilstand

The HP70 can function as a dedicated pure preamplifier. In this mode, the post-amplifikation 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 Hovedtelefoner Amplifier tilstand

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 Fjernbetjening

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. Nøglefunktioner

• Fully Balanced Discrete Class A Amplivligere: 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-amplifikation stage can be disabled for pure preampdrift af lifter.
• Preamplifier with Socketed Op-Amps: Præamp section uses two socketed LME49720 dual op-amps. Den præamp 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 bindtage forordning: Designed with multiple stages af 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. Specifikationer

6.1 Generelt

• Mærke: Fanmusic (Gustard Audalytic)
• Model: HP70
• Farve: Sølv
• Strømforsyning: AC 115V/230V, 50/60Hz or DC 12V-18V
• Strømforbrug: <15W
• Dimensioner (BxDxH): 220 x 170 x 50 mm (eksklusive fremspring)
• Nettovægt: 1.6 kg
• Forbindelse teknologi: RCA, XLR, USB, Optical, Coaxial, Bluetooth, LAN
• Controller type: Fjernbetjening
• Kompatible enheder: Speaker, Tablet, Personal Computer, Smartphone, Amplivligere, hovedtelefon
• Lydudgangstilstand: Stereo, Surround (5.1 channel configuration)

Figure 6: Dimensions of the Gustard Audalytic HP70.

6.2 Præamplifier Analog Output (Rear XLR)

• Frekvensrespons: 20Hz-40kHz (±0.1dB)
• Signal-til-støjforhold: 122dB
• Kanal Crosstalk: <-120dB @ 1kHz
• THD+N: <0.0004 %
• IMD: <0.0004 %

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

• Output Impedance (6.35mm): 0.1Ω
• Output Impedance (4.4mm Balanced): 0.2Ω
• Frekvensrespons: 20Hz-40kHz (±0.1dB)
• Signal-til-støjforhold: >120dB
• Kanal Crosstalk: -118dB ved 1kHz
• THD+N: <0.0005% (1kHz, 1000mW into 32Ω)
• IMD: <0.0005% (1000mW into 32Ω)
• Maximum Output Power (Clipping): ≈2000mW (32Ω, balanced)

6.4 Digitale indgange

• 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. Vedligeholdelse

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

• Rensning: 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.
• Ventilation: 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.
• Miljø: Operate the HP70 in a clean, dry environment, away from direct sunlight, heat sources, excessive dust, and moisture.
• Sluk, når den ikke er i brug: 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. Fejlfinding

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

• Ingen strøm:
  • Kontroller, om strømkablet er korrekt tilsluttet til både enheden og stikkontakten.
  • Kontroller, at stikkontakten fungerer.
  • Kontrollér sikringen på bagpanelet. Hvis den er sprunget, skal den udskiftes med en sikring af samme type og kapacitet.
• Ingen lyd:
  • Sørg for, at den korrekte inputkilde er valgt.
  • Kontrollér, at alle lydkabelforbindelser (indgange og udgange) sidder ordentligt fast.
  • Increase the volume level on the HP70 and your source device.
  • If using preamplifier outputs, ensure your power amphøjttalere eller aktive højttalere er tændt og fungerer korrekt.
  • If using headphones, ensure they are properly plugged into the correct jack and are functional.
• Forvrænget lyd:
  • Check if the input signal level is too high, causing clipping. Reduce the output volume from your source device.
  • Sørg for, at alle kabler er i god stand og korrekt tilsluttet.
  • Test with a different audio source or headphones/speakers to isolate the issue.
• Fjernbetjeningen virker ikke:
  • Kontrollér og udskift batterierne i fjernbetjeningen.
  • Ensure there are no obstructions between the remote and the HP70's IR receiver.

Hvis problemet fortsætter efter at have forsøgt disse trin, bedes du kontakte kundesupport.

9. Garanti og support

9.1 Garantioplysninger

The Gustard Audalytic HP70 comes with a 1 års garanti 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 Kundesupport

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.