In Re-Design - The 845PP Integrated amplifier is being re-designed by Icon Audio UK to be lighter and smaller. We will announce when the new model becomes available.
The Ultimate Tube Integrated Amplifier is achieved in the Icon Audio UK Stereo 845 PP. Pure Class A Triode front-end and pure Triode push-pull output stage incorporating the amazing sounding 845 tubes. This Icon Audio flagship integrated amplifier was designed to get the best performance out of the fabulous 845 tube and is ideal for the listener that wants the ultimate in a luxurious warm sound.
The legendary 845 luxurious sound quality is
presented here in nearly all class A, as the valves are
only running at 35% of their rated output. The
attention to detail and quality will reveal the finest
detail of your recordings in a warm musical form.
Everything possible has been done to allow this
superb valve (Tube) to work its magic. Forty watts is ample
power to obtain a high volume in most situations.
This means that all of the components and valves are
generously rated to give the ST845 its enviable sonic
signature. And still comfortably get everything in one
chassis.
The importance of Push-Pull. Many exotic SE
designs are criticized for their distortion and bass
performance. A glance at the ST845 figures shows
real bass power at low distortion is possible!
The sound quality: tested on a wide range of
loudspeakers the ST845 offers a very unbiased
interpretation of music that only valves can do. The
design is deceptively simple, using very little
feedback, lots of pure copper and heat!
You can expect a three-dimensional sound stage,
and very precise imaging is more precise. The
“texture” of each instrument is more apparent.
Why did we design this? Following our very
successful MB845 110w mono blocks, we realized
that there are many people who just love the sublime
quality of the 845 valves but do not need high power
or have the space needed for two large mono blocks
and a pre-amp. Surprisingly 100w to 40w is only
3.9db lower in sound output, so the ST845 is an
excellent relatively small one box.
Summary: The finest pure triode presentation without the
high power of our MB81s. Created with absolute listening
quality in mind. The “ultimate” triode PP integrated
amplifier.
Read the reviews and come and listen!
Specifications and Features  Pure Class A, Triode front end
 Pure Triode 845 push-pull output Stage
 All hand wired point to point
 Remote control volume
 May also be used as a power amplifier
 Comprehensive manual supplied
 Built in “Easy Bias” Meter
 ALPS Japanese volume pot.
 4x 845 precisely matched
 2x 6SL7 first stage valves
 2x 6SN7 output driver valves
 1x GZ34 driver stage rectifier
 Max output one channel 41w 8Ω 1% THD*
 40+40w 8Ω both ch driven 0.5% THD*
 THD 8w 0.15%. 1w 0.09%
 Max output into 4Ω 32w (11.3v)
 Max output into 16Ω 39w (25v)
 Signal to noise level -105db
 Channel balance better than 0.1dB
 Damping factor of 14
 Freq response 10hz-20kHz -0dB (41kHz –0.1db) 8w
 Freq response 20Hz-20kHz 0.25dB (40kHz -1dB) 38w
 Suitable loudspeakers 4Ω to 16Ω
 *Low Distortion Tertiary wound output transformers
 Transformers potted to reduce noise
 Solen/SCR Hi Fi quality audio capacitors
 Jensen copper foil on request
 Silver plated pure copper PTFE audio cable
 Gold plated Input & speaker terminals
 Attractive Plexiglas cover supplied
 Four line inputs
 Record loop
 300mv sensitivity.(high) for full output
 950mv sensitivity (low) for full output
 Input impedance 100 kΩ
 220/240/115 volts 220watts typical, 500w max
 C E. FCC ROHS
 44cmW, 46D, 24H (28H with cover), 35kg