TAD Laboratories
Grand Evolution One
The Grand Evolution One (GE1) is TAD Laboratories' Japanese flagship-class floorstanding loudspeaker, a three-way, three-driver bass-reflex design built around TAD's proprietary Coherent Source Transducer (CST) — a coaxial beryllium tweeter and magnesium-cone midrange driver mounted concentrically for point-source imaging (source: [Stereophile](https://www.stereophile.com/content/tad-grand-evolution-one-loudspeaker), [The Absolute Sound](https://www.theabsolutesound.com/articles/tad-grand-evolution-one-loudspeaker-musicalitys-a-thing/)). Twin 7" MACS II aramid-composite woofers and a downward-firing reflex port round out the low end, all housed in a thick MDF cabinet with birch-plywood bracing and a glossy olive-wood front baffle (source: [Stereophile](https://www.stereophile.com/content/tad-grand-evolution-one-loudspeaker)).
MSRP
$64,995
Used market · Excellent
$42,000
MSRP to used market
From $64,995 at launch to $42,000 today.
Specifications
- Weight
- 141 lb (64 kg) per speaker, including base platform
- Dimensions
- 15½" × 47½" × 21½" (394mm W × 1,212mm H × 547mm D, without spikes)
- Sensitivity
- 88 dB/2.83V/1m
- System type
- Three-way, bass-reflex floorstanding loudspeaker with downward-firing port
- Cabinet material
- 40mm-thick MDF panels with 18mm birch-plywood internal bracing; glossy black lacquer sides/back with glossy olive-wood front baffle
- Driver complement
- TAD Coherent Source Transducer (CST): 1× 1.38" (3.5cm) beryllium dome tweeter coaxially mounted with a 5.5" (14cm) magnesium-cone midrange; 2× 7.1" (18cm) MACS II aramid-fiber-composite cone woofers
- Nominal impedance
- 4 ohms
- Frequency response
- 27 Hz – 100 kHz
- Crossover frequencies
- 250 Hz and 1.8 kHz
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