1. Introduzione
The PreSonus HP4 is a compact, high-quality 4-channel headphone amplifier designed to deliver clear and powerful audio monitoring for studio and live applications. This manual provides comprehensive instructions for setting up, operating, and maintaining your HP4 amppiù vivace.
2. Caratteristiche principali
- Four Stereo Headphone Amplificatori: Provides four independent, high-output (130 mW per channel) stereo headphone outputs.
- Controlli di livello individuali: Each headphone channel features its own volume control for personalized listening levels.
- Monitor Level Control: A dedicated control for the overall monitor output level.
- Monitor Mute Button: Allows for quick muting of the monitor outputs.
- Mono Summing Switch: Converts the stereo input signal to mono for specific monitoring needs.
- Balanced Line Inputs: Two balanced 1/4-inch line inputs (Left/Right) for connecting audio sources.
- Uscite monitor bilanciate: Two balanced 1/4-inch monitor outputs (Left/Right) for daisy-chaining multiple HP4 units or connecting to other monitoring systems.
- Ampia gamma dinamica: Ensures clear audio reproduction across a broad spectrum.
- Basso rumore di fondo: Operates with a super-quiet -98dB noise floor for pristine sound.
- Design compatto e durevole: Housed in a robust 1/3U rack-mount chassis, designed for longevity and portability.
3. Guida all'installazione
3.1. Disimballaggio
Carefully remove the PreSonus HP4 from its packaging. Ensure all components, including the HP4 unit and its power supply, are present and undamaged. Retain the packaging for future transport or storage.
3.2. Pannello frontale sopraview

The front panel features four 1/4-inch headphone outputs, each with an independent volume control knob. Additionally, there is a Mono summing switch and a Monitor Mute button, along with a master Monitor Level control.
3.3. Collegamenti del pannello posteriore

The rear panel includes the 12V DC power input, two balanced 1/4-inch Left and Right inputs for your audio source, and two balanced 1/4-inch Left and Right monitor/thru outputs. These outputs allow for daisy-chaining to another HP4 unit or connecting to studio monitors.
3.4. Connecting Your HP4
- Collegamento elettrico: Connect the included 12V DC power supply to the HP4's power input on the rear panel. Plug the power supply into an appropriate AC outlet.
- Ingresso audio: Connect the Left and Right outputs from your audio interface, mixer, or other audio source to the HP4's balanced 1/4-inch Left and Right inputs on the rear panel.
- Collegamento cuffie: Plug your headphones into any of the four 1/4-inch headphone outputs on the front panel.
- Monitor Output (Optional): If you wish to daisy-chain another HP4 or connect to studio monitors, use balanced 1/4-inch cables to connect the HP4's monitor/thru outputs to the inputs of the next device.
4. Istruzioni per l'uso
4.1. Accensione/Spegnimento
Once all connections are made, ensure the master Monitor Level knob is turned down before powering on. The HP4 does not have a dedicated power switch on the unit itself; it powers on when connected to the power supply and off when disconnected. Some power supplies may include an inline switch.
4.2. Adjusting Headphone Levels
Each of the four headphone outputs has an independent volume knob. Rotate the knob clockwise to increase the volume and counter-clockwise to decrease it. Advise users to start with low volume and gradually increase to a comfortable listening level.
4.3. Using the Mono Switch
IL Mono switch on the front panel sums the stereo input signal to mono. This can be useful for checking phase compatibility or for monitoring a mono source across both ears of the headphones.
4.4. Monitor Level and Mute
IL Monitorare il livello knob controls the overall output level of the balanced monitor/thru outputs on the rear panel. The Monitor muto button silences these outputs without affecting the headphone outputs. This is useful for quickly cutting monitor sound while maintaining headphone mixes.
5. Manutenzione
- Pulizia: Use a soft, dry cloth to clean the exterior of the HP4. Avoid using abrasive cleaners or solvents, as these can damage the finish.
- Magazzinaggio: When not in use for extended periods, store the HP4 in a cool, dry place, away from direct sunlight and extreme temperatures.
- Gestione dei cavi: Ensure all cables are neatly organized and not under strain to prevent damage to connectors or the unit.
6. Risoluzione Dei Problemi
| Problema | Possibile causa | Soluzione |
|---|---|---|
| Nessun suono dalle cuffie. |
|
|
| No sound from monitor outputs. |
|
|
| Audio distorto o rumoroso. |
|
|
7. Specifiche
- Canali: 4 stereo headphone outputs
- Potenza di uscita: 130 mW per canale
- Ingressi: 2 x 1/4" TRS Balanced Line Inputs (Left/Right)
- Risultati: 2 x 1/4" TRS Balanced Monitor/Thru Outputs (Left/Right)
- Uscite cuffie: 4 x 1/4" TRS Stereo
- Controlli: 4 x Headphone Level, 1 x Monitor Level, Mono Switch, Monitor Mute Button
- Rumorosità: -98 dB
- Energia: 12V DC / 1A (external power supply included)
- Peso: 907 grammi (circa 2 libbre)
- Chassis: Compact 1/3U rack-mount design
8. Video di prodotto
8.1. PreSonus HP4 Compact Headphone Amplificatore Oltreview
Questo video fornisce una panoramica concisaview of the PreSonus HP4 Compact Headphone Amplifier, highlighting its features and typical use cases in a studio environment. It demonstrates the physical unit and its various controls and connections.
8.2. PreSonus HP4 4-Channel Compact Headphone Amplifier - Review
This video offers a detailed review of the PreSonus HP4, showcasing its build quality, functionality, and how it integrates into a professional audio setup. It covers the front and rear panel features and discusses its performance.
9. Garanzia e supporto
9.1. Informazioni sulla garanzia
The PreSonus HP4 comes with a one-year warranty from the date of purchase from an authorized dealer, applicable to the original purchaser only. Please retain your proof of purchase for warranty claims.
9.2. Assistenza clienti
For technical support, product registration, or additional information, please visit the official PreSonus websito: www.presonus.com/supportLì puoi trovare anche le FAQ e i forum della community.