"I’ve loved the REF 75 since first
hearing it, but the REF 150 SE is
a level beyond. The first REF 150
blew me away, yet the SE shows
gains, especially in the bass,
midband and stage width, one
could not have anticipated. How
much is due to KT150s, and how much is it due to new parts? I cannot say.
Regardless, the upgrade borders
on the supernatural. With both
small and large ‘R’s, this is my
new reference.
Sound Quality: 88%
0 - - - - - - - - 100"
Hi-FI NEWS & Record Review, Ken Kessler, Dec 2015
Specifications
Power Output:
150 watts per channel continuous
from20Hz to 20kHz. 1kHz total
harmonic distortion typically 0.6% at
150 watts, below 0.03% at 1 watt.
Approximate actual power available
at ‘clipping’ 160 watts (1kHz). (Note
that actual power output is dependent
upon both line voltage and ‘condition.’
i. e.: if the power line has high distortion,
maximum power will be affected
adversely, although from a listening
standpoint, this is not very critical)
Power Bandwidth: (-3dB points)
5Hz to 80kHz
Frequency Response: (-3dB points
at 1 watt) 0.5Hz to 120 kHz
Input Sensitivity: 2.0V RMS BAL for rated
output. (24 dB Bal gain into 8 ohms)
Input Impedance: 300K ohms Balanced
Output Polarity: Non-inverting.
Balanced input pin 2+ (IEC-268)
Output Taps: 16 ohms, 8 ohms, 4 ohms Power Output:
150 watts per channel continuous
from 20Hz to 20kHz. 1kHz total
harmonic distortion typically 0.6% at
150 watts, below 0.03% at 1 watt.
Output Taps: 16 ohms, 8 ohms, 4 ohms
Output Regulation: Approximately
0.6dB 16-ohm load to open circuit.
(Damping factor approximately 14)
Overall Negative Feedback: 14dB
Slew Rate: 13 volts/microsecond
Rise Time: 2.0 microseconds
Hum & Noise: Less than 0.1mV
RMS – 114dB below rated output
(IHF weighted, input shorted)
Power Supply Energy Storage:
Approximately 1040 joules.
Power Requirements: 105-
125VAC 60Hz (210-
250VAC 50Hz) 730 watts at rated output,
900 watts maximum, 420 watts idle
Tubes Required: 4 – Matched pair KT150
– Power Output; 4 – 6H30 Driver
Dimensions:
width: 19” (48.3 cm)
height: 8.75” (22.2 cm)
depth: 19.5” (49.5 cm)
Handles extend 1.5” (3.8 cm) forward
Weight:
75 lbs. (34.2 kg) Net
90 lbs. (41 kg) Shipping
Local collection only. Cannot be shipped.
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