Now offering a Single Ended type 45 with H-20-7U Hashimoto output transformers.
We have been working very hard to perfect this Line Level Pre Amplifier. The design features multiple stage power supplies , current and voltage regulated .
The heaters for the Single Triode 6J5 per channel are also regulated .
The Signal path is very pure and simple , input to the 6J5 grid then out via the Anode to a Lundahl Line Level Transformer for a 600 ohm balanced or RCA output.
The performance is quite stunning, using high end Lundahl transformers to set the impedance output gives a very pure sound, no extra tubes to impede the signal.
The 6J5 triode is a very linear tube and provides a big and open sound stage. Instrument's and performers move in perfect harmony across the sound stage with pin point accuracy .
Sound is very detailed but never bright , enough warmth to provide a very lifelike rendition of the original recording .
Excellent frequency extension across the complete range.
Up to five separate inputs can be ordered and XLR balanced output.
Silver input RCA's and Neotech OCC copper point to point wiring .
Obligato Oil and Polypropylene power supply smoothing capacitors , all other parts used are audiophile grade .
Steel chassis and lovely Australian Jarrah hardwood side panels .
We have used natural orange oil and wax to treat the wood grain sides, Australian Jarrah is shown here but thicker Blackwood sides can also be ordered as an email request.
11Hz -40KHz -1dB bandwidth
RCA and Balanced output.
Distortion less than 0 .5 % THD or IMD.
Power supply ripple below 100dB.
Class A driven .
The Retro225 7591A / 5B/255M > 0.1 % distortion , Switchable 15 watts Triode, Ultra Linear 25 watts & 30 watts Pentode.
Featuring wide bandwidth Lundahl output transformers . More on this soon.
With this tiny chassis 300x200mm a EZ81 rectifier tube is fitted with a mA meter and a 6SF5 input tube DC coupled .
The sound quality is the same as the birch ply chassis model .
The Hashimoto 7 watt H-203S or Finemet transformers can be chosen as options, please refer to the price tab for ordering information
For those who prefer more traditional metal chassis with Australian Blackwood sides finished with Orange oil and Gillies wax coatings .The front panel is 100mm alloy brush coated and anodised hard waring surface.
A mA meter with selector switch or a Volume control are options on ordering and Silver or OCC copper hook up wire . At 11kg its our lightest amplifier and ideal when space is limited
An example of a Bespoke SE2A3 with double C core Amorphous output transformers .
Dual RCA line level inputs and Volume control.
Triode strapped 6E5P input tube seen here
10Hz -80kHz -2dB
A Bespoke 2A3/6C4c with 5R4Y rectifier tube and volume control and dual RCA line level inputs.
Nanocrystalline output transformers.
10Hz - 65kHz -2dB
25Hz -80KHz -2dB
These Nanocrysatalline output Transformers are Custom Wound by Mr Suzuki for General transformers .
Multifilar Layering for extended frequency response 25Hz - 50 KHz -1dB at Tesla T1.3 this metal is characterized by excellent detail retrieval, very low distortion and up to 1/5 the core loss of Iron based metal's like HiB GOSS.
These are better that Ultra HiB or Perma - Nickel cores !
Top of the range TAMURA F-2007
10Hz - 60KHz 100mA
Excellent Bass response .
An industry standard in high end production .
Frequency response 7 Hz - 25 kHz +/- 0.5 dB Phase Shift @ 20 Hz 2° @ 20 kHz 13.5° Group delay @ 20 kHz 2.2 µs
With the demise of Tango transformers of Japan which are collectors items now because of their outstanding performance . We are happy to introduce HATT Audio of Japan who have reversed engineered most of the Tango range of transformers with the same quality Orient Steel and winding techniques to match or exceed the original designs .
10Hz -80KhHz -2dB
10Hz - 25KHz -1dB
We can source many different parts and tubes .
Type 45 ,50, 2A3, WE300B ,PX4 , PX25 , 2E22, KT66 and KT88 are just some examples
Price would need to be agreed before build with %50 deposit .
Line Input Transformer
1:1 FOR 'BALANCED BRIDGING' INPUTS
• Ideal for balancing any high-impedance unbalanced input
• Wide bandwidth: -3 dB at 0.25 Hz and 80 kHz
• Recommended for levels up to +19 dBu at 20 Hz
• High input impedance: 14 kΩ
with 10 kΩ load
• High common-mode rejection: 124 dB at 60 Hz
This transformer is designed for use in wideband line input stages. Distortion
remains very low and CMRR remains high, even when driven by high source
impedances. The primary is fully balanced and its terminals may be reversed
to invert polarity, if required. A 30 dB magnetic shield package is standard.
High End Volume Control from TKD for very even tracking and for added transparency in the signal chain a step up from the normal Blue Alps most commonly used in many production amplifiers.
High Quality , low noise Torodial Power Transformers now used in all our designs .
Please read MORE tab for extra information on performance .
Audiophile Quality CMC RCA inputs