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The Corus Stereo Preamplifier delivers the Jeff Rowland hallmark of a sensuous and grain free musicality, combined with astonishing transparency and low level resolution. A broad 3-dimensional sound stage materializes into the physical listening space, where instruments and vocalists assume the textured appearance of solid existence.
The preamplifier yields exceptional frequency extension and linearity, with magnificent bass definition, an extraordinarily complex exposure of harmonic structure, and a sweetly filigreed treble. The Corus yields amazingly nuanced low level detail and micro-dynamics, and outperforms every previous Rowland preamplifier with its transient speed, staggering authority, and breath-taking macro dynamics.
Ultra Low Resonance Chassis
Balanced preamplifier design housed inside twin ultra-low resonance, structurally rigid chassis precision-machined from solid ingots of aircraft grade 6061-T6 aluminum, completely sealed for trouble-free operation, yield maximum electrical/EMI/RF isolation.
Diamond Sculpted Front Panel
Matching front panels precision-machined and sculpted with a diamond tipped cutting tool into a uniquely elegant prismatic curved design.
Power supplies and microprocessor-based system control circuits confined inside control chassis. Sensitive audio circuits isolated in audio chassis. Left and right subsystems further isolated into individual milled Aluminum pockets in true dual mono design for ultimate RF and EMI shielding.
Free of internal signal pollution
Control subsystem taken completely offline after each command execution to maximize sound purity.
Multi-regulated AC SMPS
High speed switch mode power supply (SMPS) developed for aerospace applications incorporates passive power factor correction (PFC) for sonic performance so pure and musical that is virtually invariant to power cords.
Circuits implemented on military-grade 4-layer ceramic boards for minimum energy retention. Boards further sport numerous grounding points for extended internal star-grounding.
Shortest signal path
Gain stages based on ultra-low noise advanced TI Burr brown OPA1632 differential balanced audio amplifiers are implemented into shortest signal path of any Rowland reference preamplifier.
Dual zone preamplification
Separate 2nd gain stage for record outputs sports own OPA-1632 modules and independent volume.
All inputs and outputs coupled to identical custom wound Lundahl transformers for maximum noise rejection and cross-component compatibility. Transformer coupling also ensures invariant gain for balanced and unbalanced devices. Flexible connectivity: 6 inputs (4 XLR balanced, 2 RCA unbalanced); 4 main outputs (2 XLR balanced, 2 RCA unbalanced); 2 record outputs (1 XLR balanced, 1 RCA unbalanced).
Input gain offsets
Hi resolution independently programmable gain offset on each main input ranging from -10dB to +10dB in 0.5dB increments-. Output offset: hi resolution programmable gain offset on main unbalanced input 2 with 0.5dB resolution.
Unity gain inputs
All main input configurable as unity gain bypass for compatibility with theater processors.
Independent signal phase inversion control on left and right channels for optimum speaker setup and system checks.
Hi resolution (1.0dB) panning of stereophonic image (channel balance) for a maximum +/-20dB shift.
Long life graphic vacuum fluorescent display (VFD) for system control. Remote control: Highly ergonomic, custom remote control transmitter milled from Aluminum billet supports complete system control and duplicates front panel operations.
All orders are processed within 48 hours from date of order.
We offer Free Ground Shipping on all orders regardless of size.
- If you would like to receive your order quicker you can request Express shipping during Check-Out in the Comments section. Additional charges will apply.
- In-stock items are shipped from our Vancouver warehouse and will reach major Canadian cities in 5-7 business days.
- Items not in stock will either ship from one of our manufacturer partners' warehouses or in rare cases first must be sent to Vancouver and then to you.
- If the expected arrival to you will be more than 7 business days you will be notified by email and at that point you will have the option to proceed or if you cannot wait then order can be cancelled.
We will gladly:
- (a) exchange a product that is not special ordered, or shipped from one of our partner warehouses, for a new product of equal value (product purchased must be unopened)
- (b) exchange a product if it is defective or damaged for the same product
within 15 days after the product has been delivered to you.
Returns for refund are not accepted.
For an exchange, you must notify us by email at firstname.lastname@example.org. We will acknowledge receipt of your email by reply and assist you in returning the product as identified below. Make sure to send and have your return package post marked within the 15 days after the product has been delivered to you.
- Headphones may not be returned or exchanged for any reason, only defective units will be replaced for the same model
- Items that have been opened may not be returned
Notwithstanding the foregoing, you may cancel an order if the product is not delivered to the delivery address on your order form within 30 days of the date your order is accepted.
To cancel, you must notify us by email at email@example.com. We will acknowledge receipt of your email and process the cancellation.
Products returning for exchange must be unused and in their sealed, original factory packaging.
Buyer is responsible for return shipping costs.