Brioso Transforms Everyday Listening Into Something Special, Using its ELISA Circuit to Sculpt a Rich, Precise Soundstage that Pulls You Into the Music

Integrated with Audma's patented ELISA circuitry (Electronic Loudspeaker Imaging Simulating Amplifier)
Features AKM AK4499EXEQ and AK4191EQ DACs
Reconstructs the soundstage of a true Hi-Fi system
Equipped with angle, stage and bass controls
4.4mm BAL + 3.5mm SE headphone outputs

High-End Amplification, Made Compact

BRIOSO PHPA1 is the only portable headphone amplifier that integrates ELISA circuit, a unique technology designed to shape the sound image with precision, patented by AUDMA. Designed and manufactured in Italy, BRIOSO combines hi-end performance with compact dimensions and functional design. Created to support headphones with different impedances, thanks to the rear switches that allow output power to be adjusted.

BRIOSO PHPA1 is equipped with analog and digital inputs, with final conversion handled by the AK4499EXEQ and AK4191EQ, chosen for their precision and VELVETSOUND™ technology. It is made of full anodized aluminum with a silk-effect finish, anti-slip rubber inserts and push-pull potentiometers. The STAGE, ANGLE, and BASS controls are integrated into the top panel for compactness and functionality.

ELISA Technology

Listening with headphones has always meant sacrificing the three-dimensionality of sound. The sources seem in fact positioned between the ears or even 'inside the head,' making the listening experience less natural, less realistic. Thanks to an exclusive scientific approach and a patented technology, the ELISA circuitry reconstructs the ambiance, depth, and soundstage of a true Hi-Fi system in your headphones, thus offering an immersive experience never felt before.

Audma ELISA principles graphics

ELISA Principles

Reprocessing L+R Channels
ELISA does not simply 'reproduce' the sound like any amplifier would do. It reprocesses sound, by mixing part of the right signal into the left channel (and vice versa), and simulates what actually happens when listening to a sound system inside a room.

The system introduces controlled, delayed, and balanced crosstalk, based on an analysis of environmental acoustic phenomena. This allows the sound wave behavior to be recreated in a three-dimensional space, while maintaining phase coherence and tonal clarity.

The 'Room' Effect
ELISA reconstructs in headphones the spatial perception normally experienced in a listening room, by making the sounds 'exit' the head and positioning them in front of the listener, with their depth and width.

This effect is achieved through a network of calibrated delays and attenuations that simulate a real listening environment. This creates a virtual soundstage where each instrument has its own position in space.

Soundstage Control: STAGE + ANGLE
With ELISA, you can adjust the sound width (Angle) and depth (Stage), tailoring the soundstage to your preferences. STAGE: controls the intensity of the simulated environmental effect. ANGLE: manages the width of the stereo image, from more focused ('Narrow') to very wide ('Wide')

Restoring Natural Coherence
When listening with ELISA, the instruments seem positioned in real space, and no longer flattened between the ears. The sound becomes natural, open, and immersive.

ELISA acts on interaural time delay (ITD) and interaural level difference (ILD) to produce a response that is consistent with human auditory perception, while maintaining the integrity of the musical message.

Audma Brioso amplifier switches guide

Specifications

Analog Inputs: 4.4mm BAL + 3.5mm SE
Digital Inputs: USB-C
DAC: AKM AK4499EXEQ and AK4191EQ
Resolution: Up to PCM 768kHz, DSD256, 32-bit dB SNR
Headphone Outputs: 4.4mm BAL + 3.5mm SE
Headphone Compatibility: Nominal Impedance 6 ohms
Output Gain: Selectable 0/+8/+16/+24 dB
Output Power (1kHz, 32 ohms): 2 x 2.0W
Output Power (1kHz, 64 ohms): 2 x 4.0W
Output Power (1kHz, 150 ohms): 2 x 2.7W
Output Drive: Switchable 3/10V
SNR: 115dB
Frequency Response: 20Hz-20kHz
ELISA Controls: On/off, STAGE, ANGLE
Other Controls: Bass, volume
Rechargeable Battery: 1600 mAh, 7.4V (up to 5 hours)
Size: 3.1" x 0.74" x 5.4"
Weight: 0.5lbs
Quickstart Guide

Audma

Audma BRIOSO PHPA1 | Portable Headphone Amplifier