Overview

The Mytek Digital Brooklyn AMP+ is a compact Class-D power amplifier priced at 2,495 USD. It measures 8.5” W × 1.74” H × 8.8” D and weighs about 6 lb (2.73 kg). Rated power is 250W/8Ω and 300W/4Ω. Compared with the original Brooklyn AMP, the “+” version adopts a faster ~650kHz switching clock and faster FET transistors as part of Mytek’s latest Class-D implementation [2][3]. It targets high-end systems requiring a small footprint.

Scientific Validity

\[\Large \text{0.6}\]

Independent lab measurements (Stereophile) show low distortion and good linearity in the audible band. Representative data include THD+N = 0.003% at 1kHz, 50W into 8Ω; frequency response into 8Ω reaches –3dB at ~80kHz with minimal loudspeaker-load modulation in the audioband, and even into 2Ω the response is only –0.7dB at 20kHz. Channel separation measures 100dB below 1kHz and 73dB at 20kHz. Noise performance referenced to 1W is modest relative to the catalog spec: 78.5dB wideband (unweighted), 84dB (22Hz–22kHz), and 86.8dB A-weighted. Ultrasonic noise is 98mV, reduced from 315mV in the prior model. Protection engages at 210.4W/4Ω and 103.7W/2Ω, limiting continuous power into difficult loads [1]. Netting these, audible-band linearity is solid but SNR and protective behavior temper the score to 0.6.

(Notes: >121dB SNR and 10Hz–30kHz (–3dB) are manufacturer specifications [2][3].)

Technology Level

\[\Large \text{0.7}\]

The AMP+ employs Mytek’s refined Class-D stage with ~650kHz switching and faster FETs, delivering 250W/8Ω, 300W/4Ω in a half-rack enclosure. This is competent, space-efficient engineering, but not an industry-leading leap; hence 0.7 [2][3].

Cost-Performance

\[\Large \text{0.1}\]

As the cheapest equivalent-or-better alternative, a pair of Fosi Audio V3 Mono amplifiers with the 48V/10A PSU bundle (to power two units) provides stereo functionality with transparent-class specs (240W/4Ω per mono @48V/5A, SNR≥123dB, THD<0.006% (manufacturer)) at 279.99 USD [5][6].
CP calculation: 279.99 USD ÷ 2,495 USD = 0.112 → score 0.1.
Given the ~9× price gap and no clear measured advantage at the ear, the AMP+ fares poorly in CP.

Reliability & Support

\[\Large \text{0.7}\]

Mytek provides a 2-year warranty and maintains an authorized dealer/service network. Firmware updates are not applicable for this analog power-amp category. Overall support appears appropriate for the price tier [2].

Rationality of Design Philosophy

\[\Large \text{0.6}\]

Pursuing low distortion and compact, high-power delivery is rational. However, because functionally equivalent, measurement-transparent options exist at a fraction of the price, the overall resource allocation (pricing) appears inefficient, capping the score at 0.6.

Advice

If you need a small, stackable power amp within a Mytek ecosystem, the AMP+ is coherent. If your priority is objective performance per dollar, consider the Fosi V3 Mono (pair) first; it achieves the same end goal at far lower cost [5][6].

References

[1] Stereophile, “Mytek HiFi Brooklyn AMP+ power amplifier Measurements”, https://www.stereophile.com/content/mytek-hifi-brooklyn-amp-power-amplifier-measurements (Published Apr 29, 2021; conditions: 8/4/2Ω loads; 1W SNR (wideband/22Hz–22kHz/A-wt); protection thresholds; FR; distortion vs power).
[2] Stereophile, “Mytek HiFi Brooklyn AMP+ power amplifier Specifications”, https://www.stereophile.com/content/mytek-hifi-brooklyn-amp-power-amplifier-specifications (Dimensions, weight, ratings, warranty, price, spec SNR).
[3] Mytek Audio (official), “Brooklyn AMP+ SPECIAL – FREE CABLES (product page/specs)”, https://mytek.audio/shop/brooklyn-amp-special-free-cables-524 (Fast ~650kHz clock, fast FETs, specs, 2-year warranty).
[4] Mytek Audio (EU official), “BROOKLYN AMP+”, https://mytek.eu/collections/all-products/products/brooklyn-amp-plus (Additional spec description).
[5] Fosi Audio (official store), “V3 Mono 2-Pack (with 48V/10A PSU)”, https://fosiaudio.com/products/fosi-audio-v3-mono-2-pack (Market price 279.99 USD; bundle powers two monos).
[6] Fosi Audio (official), “V3 MONO specifications”, https://fosiaudio.com/pages/monoblock-power-amplifier-v3-mono (SNR≥123dB, THD<0.006%, 240W/4Ω @48V/5A; FR ±0.06dB).

(2025.8.16)