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Model 1501

Model 1501


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Product Description

The Model 1501 has 5 line inputs and a RIAA Moving Magnet (MM)phono input. 3 of the line inputs are designed to accept digital source (e.g. DAC/CD/DAB) ~2 volt full scale inputs, while the AUX and REC inputs accept 250mV full scale inputs, thus catering for analogue source components. A low distortion, buffered tape loop, selected by a front panel pushbutton switch, facilitates recording on legacy tape decks and DAT machines with a 250mV input requirement. A mute function is also provided and is activated via a front panel pushbutton switch or the remote control.

The Model 1501 features a dedicated very low distortion, wide bandwidth headphone amplifier capable of driving any 32 Ohm headphones, saving the on the expense and space of a separate high fidelity headphone amplifier.

Included in the Model 1501 is a high performance RIAA MM phono EQ amplifier. The overload capability, important if LP dynamic range is to be preserved, exceeds 32 dB ref 3mV input or 28dB ref 5mV input, while the S/N ratio approaches 80 dB ref 5mV input. RIAA equalization is exceedingly accurate at +-0.15 dB typical across the entire audio bandwidth . To cater for the potentially deleterious effects of arm resonance and warped or off-center vinyl discs, a rumble filter is provided which is selected via a pushbutton located on the rear panel of the preamplifier.

Careful attention to layout and decoupling, along with the selection and use of extremely low noise gain devices deliver a SNR (Signal to Noise Ratio) of -100 dBV and distortion levels of just 1~2 parts per million i.e. 0.0002% across the audio band (line inputs).

All signal selection and muting is accomplished through the use of precision, small signal relays rated for 1 million operations under the control of a microprocessor. Being fully sealed, the silver-palladium and gold plated relay contact assemblies will provide decades of trouble free, high performance switching ensuring low level signals cannot be compromised in anyway by atmospheric contaminants interacting with the contacts – typically a problem when using conventional mechanical switches.

The Model 1501 does not have a conventional On/Off switch. Instead, to turn the unit on or off, simply depress and then release the input source select dial located on the left hand side of the front panel.

The Model 1501 provides both balanced and single ended outputs capable of driving a 600 Ohm load at the rated distortion levels.

Designed, engineered and hand built in England. All Ovation High Fidelity products carry a 5 year warranty on parts and labour.

Custom Specifications

Inputs: CD, Tuner, Music Server, Recorder, Aux and Phono (See Phono section below for detailed specifications)
Gain – Line level Inputs: +12 dB (4x) on Aux and Recorder Inputs; -2 dB on CD, Tuner, and Music Server
Input Sensitivity – Line Inputs for 1 V out at unbalanced output and 2 V out on balanced output: Aux and Recorder 250mV; CD, Tuner, Music Server: 1.6 V
Input Impedance – all inputs except Phono: 10k Ohms
Tape Loop Output for rated input sensitivity on all inputs: 250 mV typical into 10 k Ohms
Frequency Response: Line Inputs 20 Hz – 20 kHz +0 dB -0.1 dB; 2 Hz to 200 kHz +0 dB -3 dB
Distortion 20 Hz to 20 kHz: Typically 10 parts per million at 2 V out into 10 kΩ; line inputs at 10 V out into 10 k Ω: Better than 10ppm (0.001%) Phono –better than 0.01%; typically 0.005%
Signal to Noise Ratio: Ref 1 V output better than -100 dB; Better than -110 dB ref 10 V output
Output Impedance: 50 Ohms (single ended); < 1 Ohm on balanced outputs
Headphone Amplifier: 6 V into 32 Ohms; 20 Hz – 20 kHz +0 dB -0.1 dB; 0.008% distortion 1 V RMS into 30 Ohms at 1 kHz; Standard 6.35mm stereo phono jack
Power consumption: 25 Watts maximum
Weight: 10 kgs unit only; 14 kgs including packaging
Dimensions: 450mm wide x 325mm deep x 110mm high
Remote control: Volume, input select, mute, standby on/off; RC5 IR protocol; powered off 2 x AAA batteries
Moving Magnet Phono Input: –
Input Sensitivity (measured at unbalanced output): 5 mV into 47 k Ohms for 0.5 V Output; 3 mV into 47 k Ohms for 300mV output
Overload Capability 20 Hz to 20 kHz: 28 dB ref 5mV input; 32 dB ref 3mV input
RIAA conformance 20 Hz ro 20 kHz: Typically ±0.15 dB; maximum ±0.25 dB
Distortion: Better than 0.01% at 1 kHz at 0.5 V output
Signal to Noise Ratio: 85 dB at 1 kHz ref 5 mV (input shorted); 79 dB with typical cartridge R = 400 Oms and L = 500mH
Rumble Filter: Switch selectable; -0.2 dB at 20 Hz; -18 dB at 8 Hz; -36 dB at 2 Hz (push button switch is located on rear panel)
Warranty: 5 years parts and labour from date of purchase; Terms and conditions apply – see user manual for details