Goldenote - Silver Plus
The Demidoff Silver Plus is a single ended multi-transformer stereo integrated amplifier that is handcrafted to ensure the highest performance level.
The Demidoff Silver Plus uses the finest version of the Mirror-Amp™ pre-amp section. This gain stage is obtained using a proprietary special cascade differential amplifier with a mirror current, ensuring a super-linear signal virtually eliminating distortion. It also deploys a different output design than the other simpler Demidoffs, providing state of the art linearity and improved efficiency.
The power supply is managed by 12 massive custom-designed transformers. In order to ensure the best sonic performance, there is also a smaller transformer electrically isolated from the other ones that is dedicated to powering two separate circuit boards controlling the Vu-Meter`s fluorescent lights, the motor of the volume control, the internal protection relays and even the power ON led light.
Four custom Golden transformers work as “pure” power energy suppliers while eight are decoupling transformers, mechanically isolated, to filter the DC power entering the preamplifier Mirror-Amp™ section. Such a massive inductive power supply guarantees the lowest interferences from AC power.
All the strategic power & audio sections are wired with Rounded Solid Silver bars. The RSS is a 2mm diameter bar made with 92.5% pure silver and 7.5% electrolytic OFC. It provides the very best conductivity available.
The input wires are connected to the customised selector with a 2.5mm silver cable specifically made for this flagship Amplifier.
As per all the Demidoff amplifiers, the Demidoff Silver Plus does not have active nor passive filters on the audio signal. They have designed specific passive thermal switches to turn the amplifier power off completely when an internal temperature of over 80°Celsius (180°Fahrenheit) is reached.
Its chassis is completely made of high mass aluminium to minimize RFI and EMI interference through having completely non-magnetic paths.
The Demidoff Silver Plus has two high precision Blue Fluorescent Vu-Meters and a remote control for the volume, both powered by a dedicated transformer to avoid any kind of interferences on the signal path that could affect the sound quality.
The Demidoff Silver Plus supports a wide range of inductive and resistance loads so it can be matched with any kind of audio cable, allowing users to employ their favourite wiring combination. The use of the finest custom-built electronic components plus a totally new power supply cap section ensures supremely high levels of sonic performance.
As with all the Demidoff amplifiers the Demidoff Silver Plus is equipped with custom design connectors.
Features:
POWER OUTPUT: 75w+75w @ 20-20.000Hz
FREQUENCY RESPONSE: 10Hz - 25KHz @ +/- 1dB
SIGNAL/NOISE RATIO: -102dB
THD (Total Harmonic Distortion): 0,2% @ 20Hz - 20KHz
INPUT IMPEDENCE: 47kohm
INPUT SENSIVITY: 550mV
SLEW RATE: 13μV
INPUT/OUTPUT: 6 line + 1 XLR Balanced Output + 1 fixed out
POWER TRANSFORMERS: 4 Audio Power E core customized
+8 Decoupling Power supply + 1 controlling Transformers
MOTORISED VOLUME CONTROL: supplied
DIMENSIONS: 440mm L x 230mm H x 400mm D
WEIGHT: Kg. 40,00 (88lbs.)s
NOTES: Fluorescent Vu-Meters on power output controlled by a
separate transformer - RRS™ (Rectangular Rounded Silver bar) on the audio signal path.