LAB GRUPPEN LUCIA 120/1-70_US1 Compact Mono 120W Amplifier for High-Impedance 70 V Installation Applications (LUCIA 120/1-70_US1)

Vendor: Lab Gruppen
LAB GRUPPEN LUCIA 120/1-70_US1 Compact Mono 120W Amplifier for High-Impedance 70 V Installation Applications (LUCIA 120/1-70_US1) Introducing the LUCIA 120/1-70: Uniting Effortless Installation with 120 Watts of Dispersed Power in a Compact Amplifier...

LAB GRUPPEN LUCIA 120/1-70_US1 Compact Mono 120W Amplifier for High-Impedance 70 V Installation Applications (LUCIA 120/1-70_US1)

Introducing the LUCIA 120/1-70: Uniting Effortless Installation with 120 Watts of Dispersed Power in a Compact Amplifier Compliant with Energy Star Standards.

Great Sound, Flexibility, and Ease of Use

Lab Gruppen's groundbreaking LUCIA (Localized Utility Compact Intelligent Amplification) revolutionizes audio performance, delivering exceptional flexibility through a decentralized approach to AV system design. With power, processing, control, and I/O strategically placed where needed, it's a game-changer in AV setups. LUCIA is the go-to solution for applications demanding consistent top-tier performance, offering a streamlined, cost-effective, and scalable alternative that often bypasses the complexities and added costs of a centralized equipment hub. These amplifiers integrate a digital, firmware-driven front end combined with a robust, durable, and highly efficient Lab Gruppen output stage, setting a new benchmark for sound quality and reliability in the compact amplifier category.

Fits in Anywhere

Introducing the LUCIA 120/1-70, a marvel meticulously crafted for swift assembly and seamless setup. Engineered with a supplied wall-mount bracket, it stealthily nestles behind video displays while its ultra-compact physique offers versatility—be it snug beside a projector or seamlessly integrated into reception counters, lecterns, podiums, or even the vibrant ambiance of a bar area. With all connections streamlined through Euroblock screw terminals (paired with parallel unbalanced RCA connectors) and front-panel potentiometers for effortless level adjustments, this ingenious creation ensures a safeguarded journey for both the amplifier and its companion loudspeakers. Cutting-edge circuitry stands sentinel against the perils of clipping, thermal overload, or drastic low line voltage, shielding your sound experience from potential harm.

Integrated Mix-Matrix and DSP Front End

Within the heart of the LUCIA 120/1-70 resides a digital front end, boasting a 2 x 1 Mix Matrix alongside an expansive suite of DSP capabilities. Among these treasures lie the coveted proprietary Automatic Dynamic Loudness Contouring (ADLCTM) and a rich array of EQ filters positioned both before and after the matrix. These remarkable attributes render external mixers and processors obsolete in numerous scenarios, conserving both precious time and valuable resources. Enabling a seamless journey, a software wizard stands ready to streamline the setup process, while an advanced editor empowers offline configuration of prevalent presets. These customized configurations can be swiftly ushered into multiple units via USB, fostering unparalleled efficiency and ease in management.

Green Credentials​

The LUCIA amplifiers proudly bear the Energy Star seal of approval, positioning them as the prime selection for projects striving for energy-efficient certifications. Exhibiting a conscientious design, these amplifiers gracefully transition into a standby mode, sipping less than a single watt of power after a mere 20 minutes of silence, conserving energy without compromising readiness. What's more, their responsiveness shines through as they swiftly power up within a blink of two seconds upon detecting an incoming signal, ensuring prompt readiness and efficiency when needed.

Energy Star Qualified

Our Energy Star-certified products excel not just in their outstanding Lab Gruppen sonic performance and robust power output, but also in their exceptional energy efficiency. They achieve this feat by maintaining incredibly low current draw even at high output levels, optimizing power consumption during operation, and scaling it down significantly during non-operational cycles. This prowess allows them to seamlessly balance impeccable sonic quality and formidable power output while effortlessly meeting and surpassing the stringent efficiency benchmarks set by the latest Energy Star certification standards.

ADLC for Great Sound, Every Time.​

The groundbreaking Automatic Dynamic Loudness Contouring (ADLC) embedded within ensures a listening experience that's not just fuller but also comfortably immersive, especially when immersed in lower perceived levels. This cutting-edge technology, sourced from the industry-leading TC Electronic, guarantees that LUCIA amplifiers deliver an unparalleled reproduction of the source signal, irrespective of the output gain or what's traditionally referred to as "volume." With ADLC at the helm, your auditory journey remains faithful to the source, regardless of the amplification level, ensuring an unmatched sonic experience.

Third-Party Control​

Once installed the LUCIA can be controlled and monitored either via GPIO or more extensively using the RS232 interface that is included. The protocol used is open and free for anyone to implement. The list of companies supporting it is growing.


  • Compact mono amplifier which offers 120 W for high impedance speakers on 70 V distribution lines

  • Comprehensive on-board DSP with loudspeaker processing and innovative features which enhance performance and simplifies system design and commissioning

  • Configuration software wizard for initial set-up and advanced editor for preset configuration (LUCIA connection via USB) available for Windows and Mac

  • Energy efficient with Energy Star certification for supreme green credentials and exceptionally low lifetime running costs

  • Automatic Dynamic Loudness Contouring adapts to optimize performance at any output level

  • Comprehensive DSP features with per-channel presets for high-pass filter, parametric EQ, multi-band compressor and look-ahead limiter

  • Optimized presets available for a wide range of loudspeaker models for fast configuration

  • Enhanced Bass Profile for extended LF response with small loudspeakers

  • Proprietary Auto Load Sense automatically sets VPL (Voltage Peak Limiter) for optimum performance with any connected load

  • Efficient Class-D amplifier with low distortion and minimal heat dissipation

  • Compact form factor in a half-rack, 1U chassis with supplied bracket for discreet on-wall mounting

  • Configurable GPIO port for remote control (e.g. wall panel) for channel switching, level control and integration with paging systems

  • Comprehensive circuit protection for fail safe operation, including short circuit, thermal and undervoltage protection

  • Universal power supply supports 100 - 240 V AC at 50 or 60 Hz

  • Intelligent fan control for silent operation at idle and at lower output levels

  • Front panel power and fault indication as well as per-channel signal LED and attenuation knob

  • Balanced high quality analog inputs and amplifier outputs on detachable screw terminals

  • Parallel analogue input on unbalanced RCA connectors with optimized gain for mobile and other unbalanced sources

  • Rackmount kit, pole-mount kit and wall panel kits available as accessories

Number of amplifier channels


Max total output all channels driven

120 W

Max output voltage

100 Vpeak

Max output Current

3.5 Arms

70 V

120 W

100 V 1

60 W

16 ohms

120 W

Signal to Noise Ratio

>100 dBA

Gain, Sensitivity and Limiters

100 Vpeak

Sensitivity, balanced input

4 dBu / 1.23 Vrms

Sensitivity, RCA input

-2 dBu / 0.62 Vrms

Input headroom for clip, balanced 2

12 dBu / 3.09 Vrms

Input headroom for clip, RCA 2

6 dBu / 1.55 Vrms

Connectors and Buttons
Input connectors (per ch.)

3 - pin detachable screw terminals, electronically balanced

Input connectors (ch. 1 & 2)

Unbalanced RCA type

Output connector

2 - pin detachable screw terminal


2 channels of voltage sense type. 4 pins in a detachable screw terminal. Default functionality is output level for GPI1 and wake up from stand by for GPI2.

GPO (power state output) 3

Contact closure type, 2 pins in a detachable screw terminal Default for external monitoring of fault/protection/power off


Can be controlled and monitored by third parties via RS232 using both the GPI pins


For firmware update and configuration of the signal processing and altering the default functions of the GPI ports

High pass filter

This filter is in series with the other filters in the DSP and it is controlled with switches on the back. Settings OFF / 50 Hz / 80 Hz.

Level adjustment (per input)

Front panel potentiometer, detented from -inf to 0 dB

Processing Features
Input processing block 4

4 EQ sections per input

Mix matrix routing block 4

2 in - 1 out mix-matrix controllable from GPI

Output processing block 4

4 EQ sections per output (presets available for many loudspeakers) User adjustable output look ahead limiter ADLC (Adaptive ISO 226 compensation)

Latency from any input to any output

User adjustable from 9.15 to 137 ms

Nominal voltage

100 – 240 VAC

Operating voltage

85 – 265 VAC

Standby consumption

<1 W

Mains connector

IEC inlet


One fan, no filter required, front to rear airflow, temperature controlled speed. Can stay off if the sustained power average stays below 12 W and the ambient temperature is below 25 C

Auto mode

The power state is controlled automatically by the audio signal


W: 216 mm (8.5”), H: 44 mm (1 U), D: 280 mm (11”)


1.9 kg (4.2 lbs)


Black aluminum front and black steel chassis