PA-1175 MKII
by Gold Note
ELEGANT AND POWERFUL
A class AB Power Amplifier with a selectable damping factor for easy matching with a wide variety of loudspeakers. It features a proprietary Optical BIAS that delivers high power with ultra-low distortion.
The Optical BIAS controls the voltage of the unit and features optical decoupling to overcome the downgrading solutions of traditional electronics. Analysing optically the signal while it gets completely separated from the audio signal path assures the highest protection and unbeatable performance. The PA-1175 MkII is built to minimise RFI and EMI (interferences), using massive panels of high-quality aluminium that feature the unmistakable Gold Note curved vent design. The BTL technology (Bridge-Tied-Load) allows the unit to be easily bridged in order to work as a mono amplifier. The remarkable 200W @ 8Ω per channel in stereo mode grow up to a considerable 520W per channel in mono. Pushing further the pure audio performance, it allows the PA-1175 MkII to drive easily the most demanding power speakers on the market.
FLEXIBLE TECHNOLOGY
The PA-1175 MkII power transformer is a special toroidal model featuring a unique cut spiral nucleus. The refined mechanical process makes the nucleus completely stable, canceling any mechanical vibration to guarantee a terrific performance and perfect insulation, while small secondary transformer powers the auxiliary functions with dedicated circuits outside of the audio path signal. The PA-1175 MkII features a proprietary adjustable Damping Factor technology that can be easily selected from the front panel. Setting the Damping Factor to 250 or 25 will let you find the ideal match with any kind of speaker. Use it at 250 to get the power and control necessary to drive large, low-sensitivity speakers, or set it at 25 to use the amplifier as if it was a low-power tube amplifier, perfect to drive high-sensitivity and mini-monitor speakers.
PA-1175 is our first stereo Power Amplifier: a new design that features 4 matched pair of transistors per channel with a proprietary Gold Note Optical BIAS and a constant current generator to achieve high-current and high-power rates with ultra low distortion.
Our proprietary and innovative Optical BIAS control the voltage reference of the unit: it features optical decoupling to overcome the inefficient and downgrading solutions of traditional electronics, optically analysing the audio signal while being completely separated from the audio signal path for the highest protection and unbeatable performance.
The BTL technology [Bridge-Tied-Load] allow the unit to be easily bridged in order to work as a mono amplifier, doubling its already great power rate from 175W per channel @ 8ohm up to a considerably 350W per channel.
The flexibility of PA-1175 and its performance can be pushed even further when used as a mono unit with speakers that really requires high power, massive energy and quality watts.
For PA-1175 we developed a custom 630VA toroidal transformer with a unique cut spiral nucleus: the refined mechanical process makes the nucleus completely stable, cancelling any mechanical vibration to guarantee a terrific effect and perfect insulation, further enhanced by the use of original Ducati silent blocks.
A secondary small 6VA transformer powers the auxiliary functions with dedicated circuits outside of the audio signal path.
PA-1175 is a unique power amplifier: it features an adjustable damping factor technology that you can easily select straight from the frontal panel.
Changing the Damping Factor to 250 or 25 will let you find the ideal match between PA-1175 and your speakers: use a 250DF to get the power and control necessary to drive large, difficult speakers or set it on 25DF to use it as a low power tube amplifier, perfect to drive high sensitivity speakers and smaller speakers.
To avoid any RFI and Emi potential issue, we have built PA-1175 starting with a massive solid steel chassis and adding thick aluminium panels.
High Power Amp
PA-1175 Mk 2 is a 200 Watt per channel @ 8ohm Stereo Power Amplifier bridgeable to have a mono 500 Watt per channel
Gold Note Audio Design
Single-End 8 transistors per channel powered amplifier GN Design derivated from the Diamond Line
Optical BIAS Regulation
Full innovative GN optical BIAS regulation design allows ultra low distortion clean power music signal
Optical Protection
Innovative GN design Optical Output Protection enable best audio performance
Adjustable Damping Factor
Adjustable GN property Damping Factor 250/25 playing alternatively low sensitivity difficult speakers and easy load or mini monitors
TECHNICAL SPECIFICATIONS
POWER OUTPUT
200W@8Ω per channel (520W@8Ω in mono BTL)
FREQUENCY RESPONSE
1Hz – 100KHz @ ± 1dB
THD (TOTAL HARMONIC DISTORTION)
<0.01% @ 20Hz-20kHz
SIGNAL TO NOISE RATIO
110dB
DAMPING FACTOR
High (250) or low (25)
SLEW RATE
20V/µs
AUDIO INPUTS
1x RCA unbalanced
1x XLR balanced
INPUT SENSITIVTY
1V RCA
4V XLR
INPUT IMPEDANCE
47kΩ
AUDIO OUTPUTS
Speaker terminals: Gold-plated binding posts
POWER CONSUMPTION
1200W max – 1,2W idle
POWER SUPPLY
100-120V or 220-240V, 50/60Hz
POWER TRANSFORMERS
640VA
FUSE (220/240V)
6,3A T
FUSE (100/120V)
10A T
DIMENSIONS
430mm W | 135mm H | 370mm D
WEIGHT
Kg. 20.5 – net
Kg. 27 – boxed
Finishes
Case
Brushed Aluminium | Gold or Silver
Side Inserts
Brushed Aluminium | Gold or Silver
