Technical Audio Devices Laboratories, Inc. (TAD Labs) has unveiled the latest addition to its Evolution Series, the TAD-M1000TX two-channel power amplifier. This new model, set to replace the outgoing TAD-M1000, brings several enhancements designed to improve audio performance and power delivery. Scheduled for release in November 2024 with a price tag of $24,950, the new power amplifier joins a lineup that includes the TAD-D1000TX disc player, TAD-DA1000TX D/A converter, and TAD-C1000 preamplifier.
One of the major upgrades in the TAD-M1000TX is its redesigned internal circuitry. The new architecture focuses on achieving symmetry between the left and right channels, an approach that aims to enhance the clarity and accuracy of audio reproduction.
The TAD-M1000TX employs a bridge-tied load (BTL) design, which involves connecting two separate amplifiers in a balanced configuration for each channel from input to output stages. This design ensures perfect symmetry between the positive and negative power supplies, contributing to a more refined audio output.
In addition to the circuit redesign, TAD Labs has upgraded the power transformers. The new power amplifier features twin high-capacity toroidal transformers, each rated at 1 kVA. These transformers have a new circular cross-section design, replacing the square format used in the previous model.
The circular design improves the contact between the core and coils, reducing unwanted leakage of magnetic flux and vibrations. This enhancement aims to deliver a purer and more responsive power supply, which in turn drives speaker diaphragms with greater accuracy.
The TAD-M1000TX delivers 500 watts per channel at 4 ohms, a performance enabled by a simplified Class D single output stage. This stage utilizes power MOSFET devices with ultra-low on-resistance in leadless packages, which contribute to lower power losses and higher-speed responses.
The amplifier's heavy-duty construction is supported by a three-point support structure with internally inverted spikes. This design minimizes the transfer of external vibrations to the chassis, reducing noise and distortion and allowing for more energetic audio reproduction.
Around the back, the TAD-M1000TX offers both balanced and unbalanced inputs, along with two pairs of speaker terminals. This setup provides the flexibility for bi-amping configurations, allowing users to connect one amplifier to the tweeter terminals and another to the woofer terminals of compatible speakers. Bi-amping can eliminate interference between speaker units, potentially improving the overall separation and clarity of the audio output.
The new model also features high-quality speaker terminals similar to those found in TAD's Reference Series power amplifiers. These terminals are designed to reduce mechanical and electrical stress on connected speaker cables, enhancing their stability and performance.
Externally, the TAD-M1000TX's robust main body is designed to isolate the amplifier from unwanted vibrations. The three-point support structure with inverted spikes ensures minimal contact with the surface on which the amplifier sits, preventing external movements from affecting the internal circuitry. This vibration control is a key aspect of the amplifier's design, aimed at maintaining the purity of the audio signal.
Technical Specifications:
The earthing point of the TAD-M1000TX has also been redesigned to serve as a reference point for symmetry, both electrically and structurally. This careful attention to detail in the circuit layout and component placement underscores TAD Labs' commitment to delivering high-performance audio equipment.
The TAD-M1000TX power amplifier is set to be available through select dealers starting in November 2024, at the price of $24,950.
