Overview

Austrian Audio’s Full Score One represents the company’s debut headphone amplifier, developed by 22 former AKG engineers who remained in Vienna after AKG’s closure [1]. Launched in March-April 2024, the amplifier features proprietary True Transient Technology (TTT) offering switchable 300V/µs slew rate and 2MHz bandwidth [1]. The device targets both professional studio applications and audiophile hi-fi use with multiple headphone outputs including two 6.35mm TRS jacks and one 4-pin XLR balanced connection [2]. Austrian Audio positions this as their flagship amplifier emphasizing engineering depth over marketing claims. Current retail price is 1,599 USD [1].

Scientific Validity

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No comprehensive third-party measurement reports from major independent measurement labs were found for this product. Manufacturer-published figures [1] state THD+N of 0.0005 percent at 10 ohm load, 1.0 W output, with 22 kHz measurement bandwidth; self-noise (EIN) of 136 dB(A); and maximum output of 19 dBV (9 Vrms) at 0.01 percent THD from 5 Hz to 20 kHz [1]. On paper, the stated THD+N is well below 0.01 percent, and the stated self-noise (EIN) of 136 dB(A) indicates a very low equivalent input noise level for headphone amplifier electronics if reproduced under independent measurement. Together, these manufacturer figures describe distortion and noise performance that would sit in the transparent range for the disclosed metrics. Other dimensions are not documented in comparable third-party form. These are manufacturer specifications and are not independently verified. Independent measurements will be incorporated when available. A single conservative step toward mid-scale is applied because the evidence is manufacturer-published only.

Technology Level

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The Full Score One demonstrates exceptional technology innovation through its proprietary True Transient Technology, unveiled in 2023 and representing cutting-edge transient reproduction capability [2]. TTT delivers 300V/µs slew rate versus 5V/µs when disabled, with bandwidth extending to 2MHz versus 75kHz [1]. The fully discrete analog design eliminates integrated circuits from the signal path, featuring triple emitter follower output stage biased in Class B and cascoded parallel differential input stage [2]. In-house development by experienced former AKG engineers provides significant technical expertise and competitive advantages that would require years for competitors to replicate [3]. The proprietary technology offers genuine performance differentiation in the amplifier market.

Cost-Performance

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Cost-performance analysis reveals limited value proposition. The SMSL SH-9 at 289.99 USD provides equivalent functionality with superior measured performance [4]. The comparison product demonstrates THD of 0.00006% versus the Full Score One’s 0.0005%, and S/N ratio of 137dB A-weighted versus 136dB [4]. Both amplifiers offer balanced XLR and RCA inputs, multiple headphone outputs including balanced connections, and desktop form factors [4]. The cost-performance formula yields CP = 289.99 USD ÷ 1,599 USD = 0.18, indicating the review target costs approximately five times more than equivalent-performing alternatives with verified third-party measurements.

Reliability & Support

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The Full Score One offers good warranty coverage with three years when registered, extending from the standard two-year period [5]. Austrian Audio provides manufacturer direct support through product registration systems [5]. The amplifier features robust all-metal construction for shielding and durability, with fanless design eliminating mechanical failure points [2]. The fully discrete analog design with no integrated circuits in the signal path potentially reduces electronic failure risk. However, documentation regarding repair services, parts availability, and global support infrastructure remains limited. No widespread reliability issues have been reported in professional reviews or user forums.

Rationality of Design Philosophy

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Austrian Audio demonstrates highly rational design philosophy emphasizing measurement-focused scientific approaches. The company employs extensive testing infrastructure including anechoic chambers and precision calibration systems achieving ±0.5dB tolerance for production units [3]. Cost allocation appropriately prioritizes performance and functional capabilities over aesthetic elements. The proprietary True Transient Technology provides measurable performance improvements with 300V/µs slew rate versus 5V/µs when disabled [1]. Technical claims include scientific verification through documented specifications and engineering white papers [2]. The all-analog approach is functionally appropriate for headphone amplification applications. While some marketing language includes subjective descriptions, the core technical development follows scientifically rational principles with verifiable performance characteristics.

Advice

The Full Score One suits buyers prioritizing cutting-edge proprietary technology and Austrian engineering heritage despite significant cost premium. The amplifier delivers measurable technical innovations through True Transient Technology and discrete analog design. However, equivalent measured performance is available at substantially lower cost through products like the SMSL SH-9. Consider this amplifier when proprietary technology innovation and premium construction justify the 5× cost multiplier over alternatives. Professional studio users may value the engineering pedigree and unique transient reproduction capabilities. General consumers seeking measured performance should evaluate lower-cost alternatives with verified third-party testing data.

References

[1] Austrian Audio Full Score One Product Page - https://austrian.audio/product/fullscoreone/ - accessed 2026-03-29 [2] Sound on Sound Review - Austrian Audio The Composer & Full Score One - https://www.soundonsound.com/reviews/austrian-audio-composer-full-score-one - accessed 2026-03-29 [3] Austrian Audio About Us - https://austrian.audio/about-us/ - accessed 2026-03-29 [4] Reference Audio Analyzer SMSL SH-9 Measurements - https://reference-audio-analyzer.pro/en/report/amp/smsl-sh-9-single.php - accessed 2026-03-29 [5] Austrian Audio Product Registration - https://austrian.audio/productregistration/ - accessed 2026-03-29

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