Octave HP 300 SE Vacuum Tube Preamplifier
6600,00 €
The Octave HP 300 SE is a enhanced version of the HP 300 MKII. The HP 300 SE does not replace the HP 300 MKII, this model extends our range of Preamps. The HP 300 SE offers more flexibility in the connections and sonic benefits due to some improvements in the Power Supply and the Output stage of the Line Amplifier.
Overview
The HP 300 SE has two independent XLR Inputs, three RCA Inputs, one Monitor Output, two RCA Outputs and one XLR Output. The Gain is switchable in three steps, this allow to set the optimum Gain and regulation Ratio depending on the efficiency of the Loudspeaker. The new designed Line Amp has a extremely high Signal to Noise Ratio. Noise is not only a characteristic of the tubes, a significant contribution is coming from the mains, respectively the Power supply design of a Preamp. The Power supply of the HP 300 SE consists of the external transformer with optimized isolation characteristic, and the precise ultra low noise Voltage regulators of the main unit. Both systems are match to each and help reducing the Noise of the Lime Amplifier effectively. The Balanced Output is realized with a highly symmetrical Output Transformer. The Transformer offers the possibility to connect or disconnect the Ground connection to the Power Amplifier. The feature helps to reduce disturbing mains induced currents that usually flow in the Ground of the Signal connection. Both Outputs offer very low Output Resistances. Connecting cables up to 5 – 10 meter is without negative influence. A helpful feature in modern Hifi combinations is the Home Theatre Bypass Function. The HP 300 SE offers this feature, with the additional possibility to select the Bypass Input from a RCA Input to a XLR Input. The Monitor Output is buffered and can be used to drive an external headphone Amp, the Analog Input of a Computer or similar. Phono MC is available optional.
Options
Options are available for additional cost, for additional Inputs & Outputs, please call or write us an email for more information.

| Basic Model: | HP 300 SE, optional: Phono MC |
| Tube Complement: | Line-Platine: ECC 81 und ECC 88; Phono: ECC 81 |
| Design: | Aluminium silver or Aluminium black |
| Gain high: | 25 dB = 18,5 |
| Gain med: | 19 dB = 8,8 |
| Gain low: | 12 dB = 4 |
| Frequency Response Gain: | high 10 Hz - 200 kHz - 1,5 dB |
| Total Harmonic Distortion: | Gain high 0.03% |
| S / N Ratio: | Gain high - 92 dB |
| S / N Ratio: | Gain low -108 dB |
| Left/Right Crosstalk: | 90 dB 1 kHz |
| Input to Input Crosstalk: | 100 dB 1 kHz |
| Input Impedance: | 100 kOhm |
| Output Impedance: | 50 Ohm cinch; 150 Ohm XLR |
| Channel Balance: | 0.5 dB - 70 dB |
| Power Consumption: | 35 W |
| Weight with Power Supply: | 12 kg |
| Dimensions: | 438mm (W) x 77mm (H) x 410mm (D) |
| Dimensions Power Supply: | 110mm (W) x 80mm (H) x 250mm (D) |
| Warranty: | Preamplifier (36 Months) |
| Tubes (90 Days) | |
| Connections | |
| Inputs: | 3 x Cinch, 2 x XLR, 1 x Phono Option |
| Outputs: | 2 x Cinch, 1 x XLR, 1 x Monitor |
| Phono-MC | |
| RIAA-Equalization Accuracy: | 0,3 dB 15 Hz - 20 kHz |
| Corner Frequency Subsonic Filter: | 15 Hz / - 3 dB |
| Input Impedance: | 30 - 1000 Ohm |
| Input Sensitivity: | 0.2 mV / 0.7 mV |
| Gain low: | 58 dB |
| Gain high: | 67 dB |
| Signal-to-Noise Ratio (weighted): | -75 dB |
Build a Stereo System with Octave
Octave is most often chosen as the heart of a premium two-channel system. Start with an integrated amplifier, match it with suitable loudspeakers, and refine the chain with the right sources and practical setup details.Explore compatible categories for an Octave-based system: If you want a short shortlist, contact us — we’ll recommend an Octave-based system path that fits your room, speakers and budget, and invite you for an audition in Tabasalu.
FREE DELIVERY ACROSS ESTONIA (For orders over €100)
Shipments within Estonia generally arrive at the destination specified by the buyer within 3-5 business days from the entry into force of the sales contract. The contract enters into force from the moment the amount due is received into the online store's bank account.
If you wish, you can also pick up the goods yourself. The address of the salon is Kallaste 7, Tabasalu.
WE DELIVER TO ALL COUNTRIES OF THE EUROPEAN UNION.
Please fill in all fields at the checkout and we will contact you regarding shipping costs. Please make payment only after confirming the shipping costs.
OWNER OF THE ONLINE STORE
The owner of the online store hifimarket.ee is Audio Sommelier OÜ (registration number 16891515), address Kallaste, 7, Tabasalu Keskus, Estonia 76901







