Hafler trans-nova 9505 Specifications

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9505

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• All Discrete Circuitry

• JFET Front End

• trans• nova Amplifier Topology

• MOSFET Output Devices

• DIAMOND Driver Stage

• Internal Rail Fuses

• No Fan! Convection Cooled

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• 5.25” Rack Mount (3-rack spaces)

• Stereo/Bridged Mono

• XLR or 1/4” Balanced Inputs

• Gold-Plated RCA Unbalanced Inputs

• Gold-Plated 5-Way Binding Posts

• Power Lamp

• Chassis/Float Ground Switch

• Rack Mount Handles

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• 7 Year Warranty

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EATURES

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ESCRIPTION

The 9505 model sets a new standard of sonic excellence for professional

applications. Utilizing Jim Strickland’s JFET input/MOSFET output trans•nova

circuitry along with his brilliant DIAMOND driver stage creates the ultimate

balanced amplifier.

The TRANSconductance Nodal Voltage Amplifier

(patent #4467288) is a simple three-stage design

delivering unparalleled speed and accuracy. The

Dynamically Invariant Amplification Optimized

Nodal Drive combines the linearity of Class A op-

eration with the current headroom of a Class B sys-

tem, resulting in a significant advancement in the

art of power amplifier design. The sonic result of all

this unique technology presents a deep, wide sound stage with in-

credible musical transparency and detail.

Many so-called “balanced” amplifiers are merely conventional unbalanced

designs with a balanced-to-unbalanced converter (usually IC op-amp based)

preceding the power amplifier. The 9505, however, is a true differential input

power amplifier.

Starting with the much acclaimed trans•nova amplifier core, each (+) and (–)

port of the input differential stage has been buffered with a high impedance

buffer pair. This allows direct signal access to the differential amplifier, with-

out conversion to unbalanced form. Deactivating the balanced mode is ac-

complished via a rear panel switch that grounds the (–) balanced inputs,

effectively converting the amplifier to unbalanced operation.

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Series 9505

Power amplifier

True-balanced JFET input

MADE

USA

IN THE