TADL Announces Its First Integrated Amplifier TAD-A1000
TAD-A1000-S
TAD-A1000-K
| Model | Description | Color | Available |
|---|---|---|---|
| TAD-A1000-S | Integrated amplifier | Silver | December 2025 |
| TAD-A1000-K* | Black |
* Available on a built-to-order basis
Technical Audio Devices Laboratories, Inc., today announced the TAD-A1000 integrated amplifier as the latest addition to its Evolution Series of hi-fi audio components. The TAD-A1000 also represents the inaugural TAD-branded integrated amplifier.
In the design of the TAD-A1000, we have integrated our proven amplifier technologies—including current-feedback amplification and resistance-ladder electronic volume control for preamplifiers, and a class-D analog amplification platform for power amplifiers—into a single unit. The TAD-A1000 harmoniously complements TAD’s Evolution Series speaker systems, delivering powerful and articulate sound, a hallmark of TAD’s tradition.
Main Features
1) Ultimate symmetry in circuitry and layout
The precise alignment of positive and negative currents that go through a speaker unit’s voice coils is paramount for driving its diaphragm with unparalleled accuracy. To achieve this, the TAD-A1000 employs a bridge-tied load (BTL) design that connects two distinct amplifiers in a balanced configuration for the left and right channels, spanning the input through output stages. This design ensures absolute symmetry between positive and negative power supplies. Furthermore, transformer coils, as well as rectifying, smoothing, and stabilizing circuits, are provided separately for each channel. This configuration achieves symmetry between the two channels in the circuit board layout and pattern—and even in wiring length. Our meticulous efforts to attain ultimate symmetry between left and right channels and between positive and negative signals extend further. The TAD-A1000 enhances its performance by incorporating separate grounding points for its pre- and power amplification stages.
2) High-capacity transformers with greater purity and efficiency
The TAD-A1000’s power supply is supported by a high-capacity toroidal transformer coupled with a linear regulator. To enhance the purity of the power supply, the internal coils of the transformer are directly connected to the power supply circuit, thereby minimizing their contact points with leading wires. Furthermore, terminals for directly connected coils, mounting terminals for circuit boards, and clamping screws are all fabricated from pure copper and coated with nonmagnetic materials to eliminate even the slightest magnetic distortions. The cross-sectional design of the transformer core was crafted into a circular shape, which improves the contact between the core and coils, thereby minimizing unwanted leakage magnetic flux and vibrations. This transformer provides power to the power amplifier, preamplifier, and control circuits, resulting in a robust power supply characterized by enhanced purity and responsiveness, which contributes to the exceptionally accurate driving of speaker diaphragms.
3) Immaculate preamplification circuit
The TAD-A1000’s flat amplifier in the preamplification stage features a high-performance, single-stage current-feedback amplifier, initially developed for Reference Series preamplifiers. To optimize signal complementarity, we evaluated the performance characteristics of each FET device and selected matching pairs for positive and negative elements in the TAD-A1000. This attention to detail has substantially enhanced the stability of its preamplification circuit.
4) Center-mounted, ball-bearing-supported volume knob
The TAD-A1000’s volume knob exudes an exquisite aesthetic and tactile experience. Its installation atop high-precision ball bearings ensures an exceptionally smooth rotation. The center-mounted design embodies the symmetrical layout of the internal circuits, conferring upon the TAD-A1000 a refined, elegant appearance in the tradition of the Evolution Series of high-fidelity components.
5) Elaborate vibration-control design
The TAD-A1000’s preamplification stage, power amplification stage, transformer, and control circuit are physically separated into four distinct chambers within the case. This four-chambered internal construction effectively shields the entire unit against external vibrations and provides a robust and stable ground potential. Notably, its power supply section is mechanically and electrically shielded to minimize noise and enhance signal purity. The TAD-A1000’s sturdy body is supported by three feet, each equipped with an internally inverted spike. This design physically isolates the chassis from external vibrations transmitted through the floor. The minimal contact between the TAD-A1000 and the surface prevents external vibrations from affecting internal circuits and components. This comprehensive vibration-control design enables more condensed and energetic audio reproduction, preserving the spatial nuances of the music. The rear panel features heavy-duty, extra-large speaker terminals, similar to those found in the Reference Series power amplifiers. These terminals reduce mechanical and electrical stress on connected speaker cables, enhancing their stability and optimizing their performance.
6) TAD’s custom-made parts and components
We have incorporated a variety of our custom-made components and parts into the design of the TAD-A1000 to elevate its audio quality to unprecedented heights. TAD’s custom-designed electronic volume control features ladder-resistant switching, delivering exceptionally precise attenuation performance and a ultra-low distortion of less than 0.0005% at 1 Vrms input. Nonmagnetic capacitors and resistors are employed in the audio circuit to minimize magnetic effects. To prevent magnetic distortions from compromising sound quality, gold-plated OFC leading wires without nickel base-plating are utilized for resistors and low-distortion film capacitors that handle all- critical analog audio signals. Furthermore, chip resistors with nonmagnetic electrodes reduce current loops. Additionally, four large-capacity 33,000㎌electrolytic smoothing capacitors are employed in the power amplification stage. These capacitors are of TAD’s proprietary design, developed through rigorous testing and listening evaluations.
specifications
| Power Output | 250 Wat 1 kHz, 4Ω |
|---|---|
| Rated Distortion | Less than 0.05% at 1 kHz, 4Ω 125W |
| Signal-to-Noise Ratio | 100 dB or more |
| Frequency Response | 10 Hz to 50 kHz, +0 dB/-3 dB |
| Gain | 41.5 dB |
| Input Terminal (Impedance) |
4 balanced inputs (100 kΩ) 2 unbalanced inputs (50 kΩ) |
| Power Requirements | AC 120 V, 60 Hz (United States) AC 220 V to 230 V, 50 Hz/60 Hz (Europe/Asia) |
| Power Consumption | 130 W |
| Standby Power Consumption | 0.5 W or less |
| Dimensions | 440 mm (W) × 200 mm (H) × 553 mm (D) |
| Weight | 29 kg |
