Chord ULTIMA 6
Image source — © Chord
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Model name
ULTIMA 6
Input sensitivity (mV)
N/A
Input impedance (balanced) (Ω)
N/A
Input impedance (single-ended) (Ω)
N/A
Output impedance (balanced) (Ω)
N/A
Output impedance (single-ended) (Ω)
N/A
Max current (A)
N/A
Output power (8Ω) (W)
180
Output power (4Ω) (W)
350
Gain (dBu)
30
Frequency response low +/- 3dB (Hz)
0,5
Frequency response high +/- 3dB (Hz)
100 000
Signal to Noise Ratio (dB)
N/A
Total Harmonic Distortion + Noise (0% global feedback) (%)
N/A
Total Harmonic Distortion + Noise (100% global feedback) (%)
0.005
Max power consumption (W)
1500
Damping factor
N/A
Dimensions (mm)
180 x 480 x 360
Weight (kg)
22,4
Official link
The compact analog amplifier Chord Alto features the proprietary ULTIMA amplification, which provides high-transparency sound with low distortion for both studio near-field monitors and headphones.
Chord Etude is the first sample of a new circuit concept, invented by the head of Chord Electronics, John Franks. Based on theoretical work on circuits with proactive forward communication instead of reverse — and Bob Cordell, the author of a textbook on amplifier circuit design, was a consultant to Chord Electronics on these issues — and ultrafast key power supplies, John Franks moved Chord amplifiers forward. Following the Etude, new circuit solutions are embodied in the ultra-expensive flagship amplifiers of the Ultima series. So, Chord Etude has lived up to expectations.
The output stage uses 32 MOSFET field-effect transistors in each channel, double-crystal, with a horizontal structure. These transistors are developed by Chord Electronics and are manufactured exclusively for ULTIMA amplifiers by a British manufacturer of microelectronic devices.
The Chord BerTTi power amplifier is built in a fully balanced concept and develops 75 watts in each of the two channels. The switching arsenal of the amplifier includes both balanced XLR connectors and unbalanced RCA inputs. High-quality gold-plated screw terminals are provided for connecting acoustic systems.
The modular Chord Suzi system, developed by John Franks, founder and owner of Chord Electronics, includes a pre-amplifier and a power amplifier that use Chord Ultima technology.