Acoustic Signature Tango Apex NEO: A 34 kg Phono Stage Built for the Ultimate Vinyl Systems

In the world of ultra-high-end vinyl playback, the phono stage is often the most critical—and most overlooked—component. German manufacturer Acoustic Signature clearly disagrees. With the launch of the Tango Apex NEO, the company introduces a flagship phono preamplifier designed to extract every last nuance from the most demanding cartridges and turntable setups.

Built for reference-level analog systems, the Tango Apex NEO is engineered around a fully balanced dual-mono architecture, where the left and right channels operate as completely independent circuits. Each channel features its own amplifier stage and dedicated power supply, minimizing interference and ensuring maximum channel separation. The goal is simple but ambitious: amplify the extremely delicate signal from a phono cartridge with absolute precision—without adding noise, distortion, or coloration.

According to the developers, the key goal in creating the Tango Apex NEO phono preamplifier was to accurately amplify the cartridge's weak signal without introducing noise or distortion.

A Phono Stage Designed for Precision

Phono cartridges, especially low-output moving coil designs, produce signals measured in microvolts. Amplifying these tiny signals without compromising fidelity is a major engineering challenge. Acoustic Signature addresses this by combining carefully isolated analog circuitry with a sophisticated power supply design.

Each channel is powered by its own 25 VA shunt power supply, while a completely separate supply feeds the microprocessor control system. The digital control section is galvanically isolated from the analog audio circuitry, preventing interference from reaching the signal path and preserving the purity of the music.

This level of isolation and power stability allows the Tango Apex NEO to operate quietly and consistently—even with the most sensitive MC cartridges.

Flexible Connectivity for Complex Vinyl Setups

High-end analog enthusiasts often run multiple tonearms or cartridges, and the Tango Apex NEO is built with that flexibility in mind. The phono stage provides three inputs:

• 1 balanced XLR input

• 2 unbalanced RCA inputs

Each input can be individually configured, making it easy to switch between cartridges with different electrical requirements.

Gain settings are adjustable between 40, 50, 60, and 70 dB, allowing compatibility with both MM and MC cartridges. Input loading is equally flexible, offering selectable impedance values of 47, 100, 220, 470 ohms, 1 kΩ, and 47 kΩ, with the option to fine-tune further through parallel connections.

For moving-magnet cartridges, the RCA inputs also offer adjustable capacitance settings of 100 or 220 pF.

Advanced Filtering and Output Options

To protect your system from unwanted low-frequency vibrations—often caused by warped records or turntable resonance—the Tango Apex NEO includes a subsonic filter with a cutoff around 20 Hz and a steep 24 dB slope. This effectively removes infrasonic noise without affecting musical bass information.

Output connectivity is equally comprehensive. The phono stage offers both balanced XLR and unbalanced RCA outputs, ensuring compatibility with a wide range of amplifiers.

The Acoustic Signature Tango Apex NEO phono preamplifier features a subsonic filter with a cutoff frequency of approximately 20 Hz and a slope of -24 dB, which suppresses infrasonic vibrations caused by record distortion or turntable vibrations. Input switching is accomplished using high-quality signal relays.

Unusually for a component of this type, the Tango Apex NEO also integrates a headphone amplifier capable of delivering up to 900 mW into loads between 30 and 250 ohms. With a maximum output voltage of up to 8.5 Vrms and a 100-step volume control, the unit can even function as a full preamplifier, allowing direct connection to a power amplifier or active speakers.

Built Like a Tank—Literally

One glance at the Tango Apex NEO reveals that this is no ordinary phono stage. The enclosure is machined from massive metal panels, providing exceptional mechanical rigidity and shielding for the sensitive electronics inside.

The result is a component that weighs a staggering 34.5 kg, giving it the kind of physical presence typically associated with reference-grade amplifiers rather than phono preamps.

Reference-Level Performance

Acoustic Signature backs up the engineering with impressive measurements. The Tango Apex NEO delivers RIAA equalization accuracy of ±0.13 dB, ensuring faithful reproduction of vinyl recordings. Channel separation exceeds 90 dB, while total harmonic distortion remains extremely low.

These figures translate into what the company describes as highly transparent, dynamic analog reproduction, capable of revealing the smallest details embedded in a record groove.

The Acoustic Signature Tango Apex NEO phono preamplifier's enclosure is constructed from massive metal panels, weighing a hefty 34 kg.

Made for Serious Vinyl Enthusiasts

Positioned at the very top of Acoustic Signature’s phono stage lineup, the Tango Apex NEO is aimed squarely at owners of reference-grade turntables and cartridges.

With a projected European price around €25,000, this is a component built for the most ambitious analog systems—but also one designed to push vinyl playback to its absolute limits.

For dedicated vinyl enthusiasts chasing the ultimate analog experience, the Tango Apex NEO may well represent the new summit of phono amplification.