This is the second amplifier in the premium Statement Series, which is designed and manufactured with full devotion to music and no regard to manufacturing effort. VAC's "first principles" design features: increased precision of control over the drive/output circuit; architectural control over stray interactions within the amplifier; architectural control of mechanical resonances; and avoidance of electrically large, slow components via VAC's very high speed parallel (VHSP) process. The fully hand-wired system has an external power supply which provides 400+ joule source of dual mono energy to the 225 watt/channel beam power audio chassis. Both chassis are machined from 0.25" aircraft aluminum for a rigid basis, and carry 105 lbs. of custom-wound U.S. magnetics, and couple via a proprietary tripod that controls the flow of vertical energy inputs and dissipates lateral energy inputs.
VAC Statement 450S Amplifier
The VAC Sigma 160i is a true integrated amplifier with proper line state and phono stage. MC and balanced inputs optional.
Available in black or silver fascia, gold or chrome knobs.
VAC Sigma 160i
The VAC Phi™ 300.1a is an extremely potent amplifier with power, superb definition, and great control. Its eight beam power output tubes yield 300 watts in dedicated mono mode or 150 watts/channel in stereo mode at the choice of the user. Front panel level controls may be engaged to aid in balancing biamplified systems. Both balanced XLR and single-ended RCA inputs are provided. The chassis is machined aluminum, with the tubes beautifully showcased behind 0.75" glass. Also included are standard 12 volt triggers.
The Phi 300.1a is VAC's finest amplifier. It is based on our direct coupled input & driver circuit that results in the fastest, fullest, most detailed sound that we have ever achieved. You will be surprised by details in your recordings that you had never heard before. The ambience and retrieval of reverb and decay information is particularly surprising.
VAC Phi 300.1a
The culmination of eight years' research and development, this is VAC's finest preamplifier. Its new and unique circuit follows VAC's "first principles" design philosophy, wherein we look beyond conventional wisdom to discover what a preamplifier really must do to preserve musical life. As usual, the answers are distinct from anything you've seen or heard before.
Through its principal outputs, the Signature Preamplifier contains no coupling capacitors from input to output. No coupling capacitor hinders the purity and detail developed by the hand-wired direct-coupled Class A1 triode tubes. Additionally, no loop negative feedback is used; the output interface is completely stable and free from dynamic interactions with the load. In addition to five standard line inputs (four when phono is fitted), a fully balanced input is provided. Fully balanced outputs are present, as are dual standard RCA outputs. Balancing is achieved by differential triodes driving a special output transformer. This design ensures a true balanced signal, capable of driving even the most cruel professional studio equipment, something impossible with cathode followers and totem circuits. In addition, the transformer output may be used with unbalanced loads. In this manner, galvanic loops and interaction between source & power amp feedback loops are eliminated, allowing for the most liquid, dimensional sound.
Signature Preamplifier MK II
The VAC Renaissance Mk III Preamplifier is a development of the preamplifier section from the highly regarded VAC Phi Beta Integrated amplifier and provides balanced and single-ended input and output capability. It is completely hand wired, and all switching is accomplished via high purity silver contact mechanical switches. The six active circuit elements are twin triode vacuum tubes, biased for Class A1 operation. Connectors are Cardas premium Rhodium type. Remote control of volume and mute is provided; in the mute state, the VAC logo changes from blue to red. Cine Bypass is included for use with volume controlled sources. The heavy power supply is external, with a 6 foot detachable umbilical cable. The optional MM/MC phono stage uses six triode elements with passive RIAA equalization. Variable gain (42/62 dB) and variable resistive loading are provided. Excellent results are obtained with pickups having nominal outputs from 0.2 mv to 5 mv. The standard fascia finish is black lacquer with gold metallic flake over a VAC-machined 10mm aluminum plate. The faceted and domed countersunk aluminum knobs are also machined at VAC and finished in 10 micron gold. Silver with chrome is optional at added cost.
VAC Renaissance Mk III
Every finely crafted VAC instrument is refined to bring music to life with stunning vividness and realism and to convey music with the very breath of life present in the recording studio or concert hall. VAC products are masterpieces because they allow each recorded performance to be heard with the musical authenticity the musicians intended. To bring this sonic purity and dimension of sound to the discerning ears of our customer, VAC uses vacuum tube technology almost exclusively. A passion for superb sound quality and expert attention to detail is also required to refine each piece to its peak of performance. Great care is evident in every note sounded by a VAC instrument. This is an appreciation that can only grow over a lifetime of listening for the music lover. Listen and let the sound be your guide!
XtremeFidelity is proud to be a VAC Select Dealer- one of the very few selected by VAC to carry their premier Statement line of products.
The 90 pound VAC Phi 200 is a 100+ watt per channel version of the VAC Phi 300.1a.
The Phi amplifiers produce the areas of beauty typically associated with good vacuum tube designs, but also go well beyond this, producing bass impact, speed, and dynamics that have converted many adherents of solid state design.
The Phi 200's wideband power is developed using the KT88 beam power vacuum tube, exploited to fullest advantage by custom wound 21 section output transformers, each weighing 14 pounds. The Class A direct-coupled low-mu triode input and driver stages are those developed for the Phi 300. The combination results in fast, full, detailed sound. You will be surprised by details in your recordings that you had never heard before. The ambience and retrievel of reverb and decay information is particularly startling.
VAC Phi 200
For several years the VAC Phi 300 amplifier has been earning a reputation among perfectionists as of one the finest power amplifiers available, routinely matched with speakers in the quarter million dollar class. Lately we've been wondering, what would happen if we were to remove all of the constraints and design an amplifier without any regard to cost, without any regard to size, and without any regard to weight?
The answer is the VAC Statement 450.
The sound of the Statement 450 literally caused our jaws to drop. If the Phi 300 is one of the world's best amplifiers, then the Statement 440 is no less than the redefinition of the term "World Class". It is not a subtle improvement. It is a whole new world.
VAC President Kevin Hayes describes its sound as follows: "This is an absolutely startling jump in sound quality. The voices, images, and dynamics are as solid as a concrete wall, and there is an order of magnitude more detail being presented, which manifests not only in hi-fi terms, but in emotion and, for example, being able to picture the expressions that play across a singer's face. It's not a subtle difference, or even a moderate difference; it is a quantum jump."
VAC Statement 450
Statement Line Stage
The Statement Line Amplifier is a high current, low impedance, balanced Class A1 triode vacuum tube amplifier. While inherently balanced in design, its high precision wideband transformers accomplish conversion to single-ended operation in a sonically transparent way.
Mechanical Design The chassis is machined at VAC from high-grade, non-ferrous aluminum and processed through a series of plating steps. The resulting AICuNiCr chassis possesses superior RF rejection properties across a wide range of radio frequencies for greater resolution and subjectively blacker backgrounds. Similar care is taken around each of the six wideband audio transformers in each unit. In addition to the five regular line inputs, three of which may be used with balanced sources, there is also a fixed volume input for use as a slave in a multichannel home theater system, or with other sources that control their own level. The “cinema” source may also be balanced or single ended.
Electrical Design The audio chassis is designed with distinct isolated sections dedicated to certain signal functions to prevent unwanted interactions among the circuits. Interconnecting wires are carefully routed and directed by spaced machined nonmetallic guides. The hand-wired vacuum tube audio circuit assemblies are bonded to massive brass loading plates, which in turn are isolation mounted to the main chassis for a very effective filter at audio frequencies. The avoidance of negative feedback and inclusion of input and output transformers confers the relatively unique trait of eliminating unwanted stray interactions between the source components and power amplifier, such as long chain interactions between their feedback loops which tend to coarsen the sound and flatten the sound stage.
Power Supply A massive separate power supply is a dual mono design with substantial energy storage and high inherent regulation. Both resistive and inductive elements are used in concert with high-speed capacitor assemblies for the high voltage supplies, while active voltage stabilization is included in the four heater supplies and the 12-volt trigger supply.
Remote The remote control is a massive one-pound multisection potentiometer some two inches long and nearly two inches in diameter, with machined brass shielding between the sections and against the outside world. This extraordinary part is critical in obtaining the highest fidelity in the world.
Statement Phono Pre-Amp
This VAC Statement dual mono triode vacuum tube phono (MM/MC, three gain modes, adjustable load, stereo/mono operation) preamplifier is designed for extreme applications. On the back panel there are two DC umbilical cords and large Amphenol aerospace connectors, a reminder of the massive dual mono power supply. There are inputs for four independent phone sources. In addition, each input may be of the conventional single-ended type or may be fully balanced.
Mechanical Design The chassis is machined at VAC from high-grade, non-ferrous aluminum and processed through a series of plating steps. The resulting AICuNiCr chassis possesses superior RF rejection properties across a wide range of radio frequencies. Similar care is taken around each of the six wideband audio transformers in each unit. The front panel features a large machined knob for the four-position selector switch. Another large knob selects overall gains of 52 dB, 70 dB, or 76 dB to match virtually all moving magnet and moving coil cartridges. Smaller knobs provide full control of load impedance, load capacitance, and stereo or mono operation.
Electrical Design The audio chassis’ distinct isolated sections dedicated to certain signal functions prevent unwanted interactions among the circuits. Interconnecting wires are carefully routed and directed by spaced machined nonmetallic guides. The hand-wired vacuum tube audio circuit assemblies are bonded to massive brass loading plates, which in turn are isolation mounted to the main chassis. The eight twin triode vacuum tubes employed in the various Class A 1audio stages are made with the finest grade parts, such as ‘naked’ metal foil resistors. The RIAA equalization is achieved without negative feedback, preserving the organic nature of the sound. A wide range of magnetic core materials and magnet wires were tested and auditioned, including different winding structures, silver and copper magnet wires, and mu metal and amorphous cobalt cores, to determine the ideal combination for the world’s finest phono stage.
Power Supply The massive separate power supply is a dual mono design with substantial energy storage and high inherent regulation. Both resistive and inductive elements are used in concert with high-speed capacitor assemblies for the high voltage supplies, while active voltage stabilization is included in the four heater supplies and the 12-volt trigger supply.
Master Signature Pre-Amp
Designed to approach the sonic excellence of the Statement Line Stage, the new Master Signature Preamplifer will be available for less than half the cost. And an optional internal phono board is rumored to sound very close to that of the new Statement Phono Pre-Amp.
Coming this spring to XtremeFidelity. Contact us for more details.