SPL HPm 500 Series Dual Headphone Amplifier

Headphone monitoring amplifier for two headphones with Phonitor Matrix as double rack module for the 500 series.

Phase Inverse Ø
With the phase inversion switch you can invert the phase of the left or right channel (180°).

Stereo/Mono/Mute
The audio signal can be switched between stereo and mono. In the Mute position, the headphone outputs are muted.

Phonitor Matrix
Use the Matrix switch to activate or deactivate the Phonitor Matrix (Crossfeed, Speaker Angle, Center Level).

Crossfeed
The crossfeed value determines the interaural level difference and is comparable to the influences of different room sizes and their reflection and absorption characteristics.

Speaker Angle
The Speaker Angle determines the interaural time difference, which corresponds to the placement angle of the loudspeakers.

Center Level
With Center Level you set the level compensation of the center signals when monitoring on headphones.

The Revolution
in the headphone amplifier is the Phonitor Matrix, with adjustable crossfeed, speaker angle and center level thanks to which you can create mixes on headphones that sound the same on speakers.

US and EU parcels ship via UPS, ETA 1-7 working days from pickup day zero. That also applies to most locations worldwide.

All shipments are fully insured.

Bigger shipments requiring pallets or custom made crates ship to US, CA, JP, CN, AU and other outside of EU locations via DHL Air Freight, ETA is normally approx. 7-14 working days from pickup day zero.

Big shipments inside EU ship via different freight companies, recently mostly via ACE Logistics. Freight forwarders can use different courier companies for deliveries to final destinations.

Palletising and crating time can vary depending on the size of the shipment and packaging queue. We pack all our shipments with great care.

You are most welcome to pick your order up yourself from our Retrosonic Pro Audio showroom, studio and warehouse in Tallinn, Estonia.

We ship worldwide – contact us for a personal shipping quote or any other questions.

VAT (Value Added Tax) can be deducted if you have a company with a valid EU VAT number or if you're based outside of the EU. Non-EU buyers pay all and any import tax and duty as regulated by their local customs.