Pre Amps
Croft Micro 25 Basic Pre-amplifier
Glenn’s response to the credit crunch and an answer to those who were asking for even cheaper products. In some cases only to go on to bedeck them with NOS Telefunkens when they could have bought the Micro 25 in the first place!
The components are naturally cheaper than those in the Micro 25 and it lacks the protection circuitry but it still possesses the openess and honesty of the other pres in the range.
A true bargain.
Stats and Specs
Dimensions: W - 405mm D - 270 mm H - 70mm
Valve compliment: 2 x ECC83 1 x 5965
Weight: 3 kg
Frequency Response: Phono 20 Hz - 20kHz +/- 0.5 dB
Line 0.1 Hz - 200 kHz -1dB into 100 kΩ
Sensitivity: Phono 1 mV rms for 0.5V rms output
Line 125 mV rms for 0.5V rms output
Input Impedance: Phono 47 kΩ
Line 100 kΩ
Output Impedance: < 300 Ω
Power Consumption: 16 W
Goldenote - Phono 1
The Phono 1 (mark II) is the entry level MM/MC Phono Preamplifier manufactured by Goldenote.
It`s Phono-Wide electronic design technology is able to match almost all the cartridges available on the market today, without the need to make any manual adjustment. The internal Dip-Switch is installed only to set the unit to MM gain when such cartridges are matched with the unit.
The power supply has also been carefully designed and is over-engineered to the extent that it could virtually drive a power amplifier.
The Phono 1 chassis is made of solid steel to shield the unit from RFI and EMI interference.
Features:
FREQUENCY RESPONSE:20Hz - 20KHz @ +/- 3dB
THD (Total Harmonic Distortion): 0,1% @ 20Hz – 20kHz
MC INPUT IMPEDENCE: 470ohm
MM INPUT IMPEDENCE: 47Kohm
INPUT SENSIVITY:
MC From 0,2mV to 0,9mV
MM: From 1mV to 5,0mV var. acceptance
GAIN:MC>60dB - MM: >48dB on all RIAAdiagram
RATIO SIGNAL TO NOISE: -80dB
DIMENSIONS: 130x110x240mm (LxHxD)
WEIGHT: Kg. 3,00 (7lbs)
Goldenote - PSU Phono - External Power Supply
It is an inductive, double-filtered, virtual battery power supply.
With it fitted, Phono 1 out performs Phono 2 while Phono 2 becomes a giant killer. The internal power supplies of Phono 1 and Phono 2 then act as passive decoupling power supplies.
It can be retro-fitted to older Phono 1’s and Phono 2’s with Din connectors.
Please contact me for price on this product.
Croft Micro 25 Pre-amplifier
Priced at a reasonable £700 this pre-amp delivers a very impressive performance. It uses 3 x ECC83; 2 in the phono stage and 1 in the linestage.
It is the result of 25 years honing the circuit to a point where it no longer deploys a cathode follower. The result is a more dynamic, cleaner, `faster` sound than previous models.
Stats and Specs
Dimensions: W - 405mm D - 270 mm H - 70mm
Valve compliment: 3 x ECC83
Weight: 3 kg
Frequency Response: Phono 20 Hz - 20kHz +/- 0.5 dB
Line 0.1 Hz - 200 kHz -1dB into 100 kΩ
Sensitivity: Phono 1 mV rms for 0.5V rms output
Line 150 mV rms for 0.5V rms output
Input Impedance: Phono 47 kΩ
Line 100 kΩ
Output Impedance: < 300 Ω
Power Consumption: 16 W
Goldenote - Phono 2
The PHONO 2 is a Goldenote Phono preamplifier using the proprietary Inductive-Phono™ power supply which virtually works as a DC battery. It also employs a more sophisticated Phono-Wide™ design giving excellent matching with almost all the cartridges available on the market today, without the need for manual adjustment.
Though the Chassis of the PHONO 2 is very similar to the Phono 1, a non-magnetic internal damping has been applied to ensure the highest sonic performance.
Features:
FREQUENCY RESPONSE:20Hz - 20KHz @ +/- 1dB
THD (Total Harmonic Distortion): 0,05% @ 20Hz – 20kHz
MC INPUT IMPEDENCE: 470ohm
MM INPUT IMPEDENCE: 47Kohm
INPUT SENSIVITY:
MC From 0,1mV to 0,5mV
MM: From 0,6mV to 6,0mV var. acceptance
GAIN:MC>70dB - MM: >48dB on all RIAAdiagram
RATIO SIGNAL TO NOISE: -89dB
Croft Micro 25 version "R" Pre-amplifier
The Micro 25R is the best performing pre-amp at this price point that I know of. ( EA prices for this level of performance were about double the current asking price.) The R stands for regulation giving the proverbial `iron fist in a velvet glove` effect. Bass is more focussed, voices occupy their own space and cymbals shimmer with detail. The Mosfet regulated power supply really makes a big difference to the sound. The power supply is taken care of with two large toroids and features a regulated HT.
Features and Specifications
* Regulated HT
* Dual Mono Volume control with mute switch
* Hybrid Design
* Dimensions H70mm W410mm D225mm
* 5x ECC83 1x 85A2
* 1x line and 2x phono (MM only)
* features and specifications to be taken as a rough guide and are subject to change.
Goldenote - Pamphili
The PAMPHILI is Goldenote`s flagship Phono preamplifier and uses the Goldenote Inductive-Phono™ power supply which virtually works as a DC battery and the most sophisticated version of the Phono-Wide™ electronic design giving excellent matching with almost all the cartridges available on the market today without the need to make any manual adjustment.
The PAMPHILI chassis is an aluminium cylinder guaranteeing maximum rigidity in a non-magnetic field. The internal electronics are fixed on a 10mm thick acrylic board to better dampen vibrations.
The special Inductive-Phono™ is a real inductive power supply using 3 “transformers”. Two transformers work as AC dampers to let the unit be powered by a virtual DC battery, obtaining a very silent audio signal path. All the electronic components are strictly selected and tested to achieve the best possible tolerances.
Features:
FREQUENCY RESPONSE:20Hz - 20KHz @ +/- 1dB
THD (Total Harmonic Distortion): 0,05% @ 20Hz – 20kHz
MC INPUT IMPEDENCE: 470ohm
MM INPUT IMPEDENCE: 47Kohm
INPUT SENSIVITY:
MC From 0,1mV to 0,5mV
MM: From 0,6mV to 6,0mV var. acceptance
GAIN:MC>70dB - MM: >48dB on all RIAAdiagram
RATIO SIGNAL TO NOISE: -89dB
DIMENSIONS: 100x105x360mm (LxHxD)
WEIGHT: Kg. 6,00 (13lbs)
