Furutech ADL GT40a USB DAC + Phono Stage + Headphone Amp
Furutech ADL GT40a USB DAC + Phono Stage + Headphone Amp Original price was: £555.00.Current price is: £395.00.
Back to products

First Watt F8 Power Amplifier

£3,995.00

The F8 is a stereo two-stage single-ended Class A amplifier using the NOS Toshiba 2SJ74 P channel Jfets and SemiSouth R100 SiC power Jfets for signal gain, plus IRFP240 Mosfet mu-follower current sources, for a total of three devices per channel.
It is similar to the J2 amplifier, but has only one front end transistor instead of six, operated as a current feedback amplifier (CFA) as opposed to the J2’s voltage feedback (VFA) differential input. This front end is more consistent with the single-ended approach to amplifier design and yields a purer second harmonic character, less distortion with lower negative feedback, greater bandwidth and higher damping factor.
SKU: FW-F8 Categories: , Tags: ,
Description

First Watt F8 Power Amplifier

The owner’s manual can be downloaded here: F8 Owner’s Manual
F8 Review at Stereophile

Nominal specifications:

Distortion @ 1 watt 0.015%
Input Impedance: 100 Kohm
Gain: 15 dB
Input Sensitivity (1 watt) 0.53 V
Input Sensitivity (max output) 2.6 V
Damping Factor: 40@8OHMS
Output power 8 ohms: 25 watts @ 1% THD, 1KHz
Output power 4 ohms: 15 watts @ 1% THD, 1KHz
Frequency response:  -0.5 dB @ 200 KHz
Noise: 100 uV unweighted, 20-20 KHz
Power consumption: 170 watts
Fuse: 3AG slow blow type – 2.5 Amp for 120VAC 1.25 Amp for 240 VAC
Warranty: Parts and labour for 3 years, not covering shipping costs or consequential damages.

Ask a question

    Additional information
    Weight 20 kg
    Brand

    First Watt

    Reviews (0)

    Reviews

    There are no reviews yet.

    Only logged in customers who have purchased this product may leave a review.

    Shipping & Delivery

    UK, EUROPE & WORLDWIDE DELIVERY

    Our delivery charges are based on weight and are charged at royal mail rates. Once you have added an item into your basket the shipping charge should appear based on the weight of your order, initially the charge is shown from a UK resident but after you enter your personal details the shipping for your country will appear. We deliver to any country in the world, anywhere with a valid address, typical delivery times are between 3 and 7 days.

    We will use the most appropriate carrier for your order, anything lost in transit will be replaced in a timely manner, all orders are sent using recognised postal carriers and couriers.

    On heavy and bulky items the charges can be quite high so please enquire via e-mail or telephone us for an exact cost to avoid mis-understandings.

    Delivery times are based on current workloads, we try to dispatch in stock orders within 3 days of receipt, if your order is urgent please add a note in the order comments box. Occasionally we may run out of stock of an item or if it is built to order (power supply’s, mains leads etc) it could take slightly longer to dispatch.

    Shipping charges start at £1.95 for small items like plugs and connectors, heavy items cost more and need to be sent insured delivery so please consider that when the cost appears in your basket.

    Any questions about postage or delivery please tel. 01484 540561 or send us an e-mail

    All items on the site (except those made to order) can be returned under the consumer contracts regulations within 30 days. Please contact us prior to returning so we can discuss your requirements. If the item has been specially ordered (not specially made) we reserve the right to charge a nominal re-stocking fee. We expect any goods returned to be in new condition complete with original packaging otherwise we reserve the right to refuse a refund. Items classed as “tailor made” cannot be returned under the regulations although Brook Audio may accept the return under certain circumstances.

    Please note if you order goods from Brook Audio and live outside the EU you may have to pay import duty/taxes on your purchase. We have no control over this charge and we do not pre-pay the charges for you. We do not declare a lower value to avoid customs charges so PLEASE DO NOT ASK US TO DO THIS.

    We get asked 100’s of times every week for tracking numbers, these are usually a waste of time as they only tell you that the goods are progressing through the carriers system. Usually for items sent overseas the country you live in will determine how quickly your goods arrive, as an example the Spanish postal service is very very slow, the Russian customs clearance can take weeks as well as Brazil.