Quad 77 Integrated Amplifier

Item: Quad 77 Integrated Amplifier 
Condition: 7.5/10
Price: sold or swap with your equipments/cables
Contact: 012-3816611 Raymond












Some info:

Class A/B output stage which generated about 80 watts per channel into 8 ohms. Won 'European Amplifier of the Year' in 1997. In total 5000 units were produced before the Quad 7 series was replaced by the Quad 9 series. 



Description :

The Quad 77 Integrated Amplifier was a very radical design that employed an microprocessor to control volume, balance and input switching digitally. The Quad 77 Integrated Amplifier had just 2 line inputs and a tape loop and there was no phono stage. It was also one of the first products to make use of Quad's system bus that allowed other Quad 7 series equipment to be connected to the Quad 77 Integrated Amplifier via a computer ribbon cable that linked the Quad equipment together via a serial port. This was something that angered hi-fi purists as the QUADLINK on the Quad 77 Integrated Amplifier carried audio,data, and power signals on the same cable which could never be described as audiophile.

The Quad 77 Integrated Amplifier also did not take advantage of Quad's patented current dumping circuit and instead employed a very simple but stable class A/B output stage which generated about 80 watts per channel into 8 ohms. The Quad 77 Integrated Amplifier was in production from 1996 to 1999 and won 'European Amplifier of the Year' in 1997. In total 5000 units were produced before the Quad 7 series was replaced by the Quad 9 series, 


Specifications :
Inputs.............................................Source1, 2 and Tape
Input sensitivities.............................300mV (Source1, 2 and Tape)
Load impedance..............................33kOhm (Source1, 2 and Tape)
Signal/noise....................................>100dB
Output level.....................................775mV (Preamp-out)
.....................................Same as input level (Tape-out)
Residual noise.................................'A' weighted. Volume control at minimum -105dB with reference to full output.
Interchannel balance........................+/-0.3dB with volume control varied between maximum to -70dB
Maximum power output.....................84 Watts into 8 ohm <0.05% dtot
.....................115 Watts into 4 ohm <0.05% dtot
Maximum current output...................11A peak per channel
Distortion.........................................Continous sine wave into 8ohm resistive load, any level up to 70 Watts
.........................................20Hz; <0.005% (22kHz bandwidth)
.........................................1kHz; <0.005% (22kHz bandwidth)
.........................................20Hz; <0.05% (80kHz bandwidth)
Output internal impedance................1.5uH parallel with 3.3 ohm
DC offset.........................................Typically <20mV
Frequency response (ref 1kHz).........-0.3dB at 10Hz and 20kHz
...........-0.3dB at 3Hz and 50kHz
Power response (ref 1 kHz)...............-0.75dB at 10Hz and 20kHz
Crosstalk........................................<-90dB at 1kHz
Hum and noise................................-105dB ref. 75W (22kHz measurement bandwidth unweighted)
Stability...........................................Unconditionally stable with any load and any signal



Thank you.




Item: Trichord Dino Mk2 MkII Phono Stage

Condition: 8.5/10. Item is in very near mint condition.

Price: RM1600 or swap/topup

Contact: 012-3816611

Trichord Dino Phono stage MK2

• The Dino is a high grade phono amplifier, designed for transparency and realism
  
• It will maximise the performance of a wide range of quality cartridges from ultra-low output Moving Coils to high output Moving Magnet types.
  
• The Dino is user adjustable with a set of four DIP switches on the underside of the unit for ease of access
  
• The circuitry is signal non-inverting and constructed using high performance, audio grade bipolar and JFET operational amplifiers, metal oxide resistors and ultra low impedance capacitors throughout for lowest possible noise.
  
• The RIAA equalisation network is fully passive and located between two active gain stage
  

Actual Item:













The Dino Mk2 is a high performance phono amplifier which at an affordable price gives you tremendous value.
Designed for transparency and realism, this superb sounding amplifier has been around for several years now and has won many awards and accolades along the way.
Whether you have an ultra-low output Moving Coil cartridge or a high output Moving Magnet the Dino Mk2 will cope easily. A set of user friendly switches on the base of the unit allows you to simply adjust load and gain settings.
These settings are vital to match the amplifier to the cartridge and obtain the best sonic result. If your current phono stage only has a couple of options for this function, eg a MM/MC switch, then you are missing out on the ability to tune your system to it’s optimum.
An entire upgrade path exists for this product which allows you to improve performance each step of the way.
Two main items are required for operation – the Dino Mk2 phono stage itself and an accompanying power supply.
Start with the basic ac Toroidal Power Supply and work your way up in performance by upgrading to the ‘Dino +’ dc power supply, and ultimately to the ‘Never Connected’ dc power supply. An upgrade from the ‘Dino+’ to the ‘Never Connected’ is also possible by returning your unit to us to upgrade the electronics.
To further enhance the sonic performance of these dc power units an upgrade ‘High Performance Power Lead’ is available to replace the supplied dc power lead.
Owners of the original Mk1 Dino can return their unit and have the electronics upgraded to Mk2. This involves a complete change of the main printed circuit board. Is it worth it? Absolutely. One of our dealers likened the upgrade similar to going up to the next level of cartridge.

Website:

http://www.audiot.co.uk/products/trichord-dino-mk2-4462.aspx

http://www.trichordresearch.co.uk/dino-mk2-phono-stage/

https://www.stoneaudio.co.uk/?product=trichord+dino+mk2+phono+stage




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Item: High Performance Power Lead For Dino Mk2

Condition: Mint condition. 

Price: RM390 or swap/topup

Contact: 012-3816611






Actual item:




Dino – Better Sound Quality with the High Performance Power Lead

Can a DC Power Lead really make this much difference?

The High Performance Power Lead connects the Dino (Mk1, Mk2 or Mk3)  Phono Stage to either the ‘Dino+’ PSU or the ‘Dino+ Never Connected’ power supply. It is designed to significantly improve sound quality over the standard DC power interconnect lead.
Just as signal interconnect leads make a sonic difference to the performance of a system, then so do mains leads and any other lead connecting two pieces of equipment.
Here is an excerpt from a Hi Fi Choice Review:
“Next came the new High Performance Interconnect, and the difference was staggering. All of a sudden I was involved in the music not just listening to it! Bass instruments had a larger, truer character while mid-range became even more believable, with just the right amount of treble definition.
This lead transforms the Dino into something even more special, and with the Dino+ PSU it assumes true greatness. Everything becomes more emotional and profound, with tremendous transparency given the price.”
This lead is identical to the High Performance lead for the Diablo Phono Stage.
Website:
http://www.trichordresearch.co.uk/high-performance-power-lead/





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Item: Trichord Dino+ Power Supply For Dino

Condition: 8.5/10. Item is in very near mint condition.

Price: RM1500 or swap/topup

Contact: 012-3816611

Product Description

The Dino + is a dedicated power supply upgrade for the Trichord Dino phono stage, offering a significant sonic upgrade over the standard Dino power supply. The Dino+ casing matches the Dino phono amp (aside from the front mounted power switch).

Dino+ widens the frequency range, lowers the noise floor and offers a more "organised" sound.  It is complete with a high quality mains cable for connection to the Dino phono amp and IEC socket for connection to the mains with a mains cable of your choice (standard mains cable included).

Pairing your Dino phono amp with the Dino+ power supply results in a much more transparent and open sound. If you thought the performance of the Dino was fantastic, try the Dino+ to squeeze out even more performance. Highly recommended.

Details

The Trichord Research Dino Mk2 Phono Stage with Dino+ PSU is a high performance phono amplifier and power supply unit, designed for transparency and realism. It will maximise the performance of a wide range of quality cartridges from ultra-low output Moving Coils to high output Moving Magnet types.

The Trichord Dino Mk2 Phono Stage is user adjustable with a set of four DIP switches on the underside of the unit for ease of access. These switches allow for adjustment of cartridge loading and gain setting. The circuitry is signal non-inverting and constructed using high performance, audio grade bipolar and JFET operational amplifiers, metal oxide resistors and ultra low impedance capacitors throughout for lowest possible noise.

The RIAA equalisation network is fully passive and located between two active gain stages. The capacitors and resistors used in this stage are very close tolerance audiophile types. Two state of the art ultra low impedance, low noise wide-band voltage regulators are employed to power both channels and are largely responsible for the high sonic performance of the Dino

The Trichord Research 'Dino +' Power Supply unit comprises of two completely independent and isolated dc supply circuits. One for the positive voltage rail and one for the negative, the specially made low noise audio 80VA toroidal transformer is followed by two bridge rectifiers built with ultra fast soft recovery diodes for low RF generation. The bridges are followed by RC/RC filtering comprising of 4 x 1800uF capacitors before conventional 3 pin voltage regulators. This level of filtering and regulation provides very low noise power supply lines before entering the main amplifier unit.

The power supply to the Dino phono amplifier is further regulated by two on board ultra low noise wide bandwidth voltage regulation circuits - one positive and one negative rail. These rails are shared by both channels.
- See more at: https://www.hifix.co.uk/trichord-dino-mk2-phono-stage-inc-dino-psu#sthash.9KeuIXf0.dpuf

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