Baroni THE STAGE ANT - BTSA Power Amp

Historical Context and Positioning in the Range

The Baroni The Stage Ant marks the arrival of ADAPTO technology in the world of transistor power amplifiers: an approach that revisits the "tube amp" reflex (selecting the speaker impedance) while maintaining modern, compact, and efficient class D amplification. Positioned as a mono power amp in pedal format, it is designed for musicians who already have their tone upstream (preamp, pedals, modeling) and want a reliable, easy-to-transport power solution that remains consistent from one speaker cabinet to another.

Who This Amp Is For

The Stage Ant is aimed at guitarists (and more broadly musicians) who build their sound via an external preamp : drive pedals + preamp, tube preamp in pedal format, multi-effects, digital modeler, or "ampless" rig needing a true speaker cabinet output. In rehearsal, it suits those who want to travel light without sacrificing volume and impact. On stage, it's a formidable choice if you often encounter different speaker cabinets depending on the venue and want to maintain stable power. In the studio, it becomes a simple tool to drive a speaker cabinet without changing your pedalboard habits.

Regarding styles, its "faithful amplification" philosophy makes it relevant from clean tones to modern saturations, as long as the main color comes from your preamp. It is particularly comfortable in rock, pop, metal, worship, funk setups, and all situations where multiple sounds are alternated via a pedalboard or modeling.

Features and Innovations

The heart of The Stage Ant is ADAPTO : a 3-position selector with LED that lets you choose the impedance matching your speaker cabinet (4, 8, or 16 ohms). Where many transistor amps lose power as impedance increases, here the goal is clear: maintain the same volume and punch reserve, regardless of the selected speaker cabinet.

For final shaping, Baroni integrated typical guitar power section controls: Master for overall level, Depth to manage the low-end foundation and impact (useful if a speaker sounds too "boomy" or conversely too thin), and Presence to adjust attack, air, and bite to better "cut through" the mix. The whole is complemented by an intelligent ventilation system (digitally controlled) designed to keep the amp efficient and protected over time.

Finally, the 12VDC output (up to 500 mA total) serves as a courtesy power supply for a preamp and/or some pedals, enabling a compact rig: a single power brick for the amp, which redistributes power to the front of the pedalboard.

Sound

As a class D transistor power amp, The Stage Ant aims for a clean, dynamic, and full-band reproduction: plenty of headroom to let your preamp dictate the signature (grain, compression, saturation), while offering a feeling of "amplified" response on a guitar speaker cabinet. The Depth /Presence pair acts like a "power section" EQ: you can tighten the lows for more precision or add body, then adjust the high end to regain definition with a dark speaker or tame an overly bright cabinet.

The real musical advantage of ADAPTO is felt in consistency: switching from a 1x12 to a 4x12, or from a 16-ohm to an 8-ohm cabinet, should no longer give the impression that the amp "deflates." The result: a more predictable rig, easier level management, and a control feel closer to what you expect from a traditional head... with the convenience of a pedal format.

Technical specifications

Category	electric preamp	EQ	Tone
Technology	Solid state	Headphone output	No
Format	Pedal	Color	Red
Effects loop	No	Power output	100 W
Number of channels	1

Type	mono power amp in pedal format	Signal-to-noise ratio	less than 90 dB
Power	100W RMS at 1% THD (measured at 1 kHz)	Accepted input signal level	1 to 3 V
Supported impedances	4, 8, or 16 ohms	Maximum consumption	180 W
Speaker output	minimum impedance 4 ohms	Cooling	intelligent ventilation system with digital control
Main input	mono (for signal from a preamp, modeler, pedalboard)	Dimensions	120 x 85 x 30 mm
Frequency response	20 Hz to 20 kHz	Weight	0.5 kg